Perhaps you should try some spelling variations:
"cpphuong trinh do phat." » "phuong trinh do phat." (Expand Search), "chuong tinh do phat." (Expand Search), "phuong tinh do phat." (Expand Search), "cpphuong trinh mon phat." (Expand Search), "cpphuong trinh dao phat." (Expand Search), "cpphuong trinh de phat." (Expand Search), "cpphuong trinh co phat." (Expand Search)
"chuong trinh khac phan." » "chuong trinh phat phan." (Expand Search), "chuong trinh khac han." (Expand Search), "chuong trinh khac phat." (Expand Search), "chuong trinh khai phan." (Expand Search)
"cong trinh do nhan." » "cong trinh mon nhan." (Expand Search), "cong trinh doi nhan." (Expand Search), "cong trinh co nhan." (Expand Search), "cong trinh so nhan." (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: (("cpphuong trinh do phat.") OR ((("chuong trinh khac phan.") OR ("cong trinh do nhan."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cpphuong trinh do phat.\") OR (((\"chuong trinh khac phan.\") OR (\"cong trinh do nhan.\"))))".
• Removing quotes may allow a broader search: (( cpphuong trinh do phat. ) OR ((( chuong trinh khac phan. ) OR ( cong trinh do nhan. )))).
• Adding a wildcard symbol may retrieve word variants: (("cpphuong trinh do phat.") OR ((("chuong trinh khac phan.") OR ("cong trinh do nhan."))))*.