Perhaps you should try some spelling variations:
"vuong trinh hoi phan." » "chuong trinh hoi phan." (Expand Search), "cong trinh hoi phan." (Expand Search), "vuong trieu hoi phan." (Expand Search), "vuong trinh do phan." (Expand Search), "vuong trinh hoi nhan." (Expand Search), "vuong trinh hoi phat." (Expand Search), "vuong trinh hoa phan." (Expand Search)
"huong trinh mon phan." » "chuong trinh mon phan." (Expand Search), "phuong trinh mon phan." (Expand Search), "huong tinh mon phan." (Expand Search), "huong trinh mot phan." (Expand Search), "huong trinh mo phan." (Expand Search), "huong trinh mon nhan." (Expand Search)
"cpppcong trinh hoc phan." » "cpppcong trinh khac phan." (Expand Search), "cpppcong trinh do phan." (Expand Search), "cpppcong sinh hoc phan." (Expand Search), "cpppcong trinh hoc than." (Expand Search), "cpppcong trinh hoc dan." (Expand Search), "cpppcong 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: (((("vuong trinh hoi phan.") OR ("cpppcong trinh hoc phan."))) OR ("huong trinh mon phan."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"vuong trinh hoi phan.\") OR (\"cpppcong trinh hoc phan.\"))) OR (\"huong trinh mon phan.\"))".
• Removing quotes may allow a broader search: (((( vuong trinh hoi phan. ) OR ( cpppcong trinh hoc phan. ))) OR ( huong trinh mon phan. )).
• Adding a wildcard symbol may retrieve word variants: (((("vuong trinh hoi phan.") OR ("cpppcong trinh hoc phan."))) OR ("huong trinh mon phan."))*.