Perhaps you should try some spelling variations:
"cpphuong trinh so phan." » "chuong trinh so phan." (Expand Search), "phuong trinh so phan." (Expand Search), "chuong tinh so phan." (Expand Search), "cpphuong trinh do phan." (Expand Search), "cpphuong trinh co phan." (Expand Search), "cpphuong trinh mon phan." (Expand Search), "cpphuong trinh gop phan." (Expand Search)
"vuong trinh khac dan." » "chuong trinh khac dan." (Expand Search), "vuong trieu khac dan." (Expand Search), "vuong trung khac dan." (Expand Search), "vuong trinh phat dan." (Expand Search), "vuong trinh nhac dan." (Expand Search), "vuong trinh khac da." (Expand Search), "vuong trinh khach san." (Expand Search)
"cong trinh hoc phan." » "chuong trinh hoc phan." (Expand Search), "cong trinh hoi phan." (Expand Search), "cong trinh mon phan." (Expand Search), "cong trinh do phan." (Expand Search), "cong trinh hoc than." (Expand Search), "cong trinh hoc dan." (Expand Search), "cong trinh hoc ha." (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: (((("cong trinh hoc phan.") OR ("cpphuong trinh so phan."))) OR ("vuong trinh khac dan."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cong trinh hoc phan.\") OR (\"cpphuong trinh so phan.\"))) OR (\"vuong trinh khac dan.\"))".
• Removing quotes may allow a broader search: (((( cong trinh hoc phan. ) OR ( cpphuong trinh so phan. ))) OR ( vuong trinh khac dan. )).
• Adding a wildcard symbol may retrieve word variants: (((("cong trinh hoc phan.") OR ("cpphuong trinh so phan."))) OR ("vuong trinh khac dan."))*.