Perhaps you should try some spelling variations:
"phan mem thu vien tinh hop-ung dung" » "phan mem thu vien tinh hoa-ung dung" (Expand Search), "phan mem thu vien tich hop-ung dung" (Expand Search), "phan mem thu vien hinh hop-ung dung" (Expand Search), "phap mem thu vien tinh hop-ung dung" (Expand Search), "phat mem thu vien tinh hop-ung dung" (Expand Search), "phan mem thuc vien tinh hop-ung dung" (Expand Search), "phan mem thu vie tinh hop-ung dung" (Expand Search), "phan mem thu viet tinh hop-ung dung" (Expand Search), "phan mem thu bien tinh hop-ung dung" (Expand Search), "phan mem thu vien tinh hop-ung dong" (Expand Search)
"pham mem thu vien tinh hop-ung dung" » "pham mem thu vien tinh hoa-ung dung" (Expand Search), "pham mem thu vien tich hop-ung dung" (Expand Search), "pham mem thu vien hinh hop-ung dung" (Expand Search), "pham dem thu vien tinh hop-ung dung" (Expand Search), "pham diem thu vien tinh hop-ung dung" (Expand Search), "pham le thu vien tinh hop-ung dung" (Expand Search), "pham mem thuc vien tinh hop-ung dung" (Expand Search), "pham mem thu vie tinh hop-ung dung" (Expand Search), "pham mem thu viet tinh hop-ung dung" (Expand Search), "pham mem thu bien tinh hop-ung dung" (Expand Search), "pham mem thu vien tinh hop-ung dong" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("phan mem thu vien tinh hop-ung dung") OR ("pham mem thu vien tinh hop-ung dung"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"phan mem thu vien tinh hop-ung dung\") OR (\"pham mem thu vien tinh hop-ung dung\"))".
• Removing quotes may allow a broader search: (( phan mem thu vien tinh hop-ung dung ) OR ( pham mem thu vien tinh hop-ung dung )).
• Adding a wildcard symbol may retrieve word variants: (("phan mem thu vien tinh hop-ung dung") OR ("pham mem thu vien tinh hop-ung dung"))*.