Perhaps you should try some spelling variations:
hanh trinh » canh tranh
tien manh » tien anh, tien thanh, tieng anh
den thanh » de thanh, dinh thanh, dong thanh
dung cong » dung trong
cong anh » cong danh, dong anh, hong anh
va dung » van dung, va duong, vat dung
tuan tu » tuan thu, tran tu, toan tu

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 manh) or (den thanh)) - ((hanh trinh) or (hanh chinh)) va dung cong anh tuan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien manh) OR (den thanh)) - ((hanh trinh) OR (hanh chinh)) va dung cong anh tuan tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (den thanh)) - ((hanh trinh) or (hanh chinh)) va dung cong anh tuan tu*.