Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat
nho hieu » nha hieu, nho sieu, nhu hieu
ban cong » bang cong, van cong, phan cong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than tap » toan tap, han tap, phan tap
ho hieu » ho chieu, hoi hieu, co hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) or (nho hieu)) lang - hanh ((trinh quan) OR (trinh han)) ban cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) lang - hanh ((trinh quan) OR (trinh han)) ban cong tan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) or (nho hieu)) lang - hanh ((trinh quan) OR (trinh han)) ban cong tan than tap".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (nho hieu)) lang - hanh ((trinh quan) OR (trinh han)) ban cong tan than tap*.