Perhaps you should try some spelling variations:
thanh trung » thanh tung
phai nhuong » phan thuong, pham thuong, pham chuong
tien manh » tien thanh, tieng anh, tran manh
hay nhung » tay nhung, tham nhung, thai nhung
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
tien anh » tieng anh, dien anh, tien thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien anh) or (tien manh)) - thanh trung ((hay nhung) or (phai nhuong)) cong hach toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (tien manh)) - thanh trung ((hay nhung) OR (phai nhuong)) cong hach toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) or (tien manh)) - thanh trung ((hay nhung) or (phai nhuong)) cong hach toan cao*.