Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
dung duong » dung dong, dong duong, dung dung
duong manh » duong van
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh vap » trinh van, trinh vat, trinh va
manh toan » thanh toan, anh tuan, tinh toan
tien anh » tieng anh, tien manh, dien anh
vap dung » van dung, ap dung, va dung
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu manh) or (tien anh)) - canh trinh vap dung duong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu manh) OR (tien anh)) - canh trinh vap dung duong manh toan tap.
• Adding a wildcard symbol may retrieve word variants: toc ((hieu manh) or (tien anh)) - canh trinh vap dung duong manh toan tap*.