Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
doi khieu » doi chieu, doc hieu, doi hien
trinh van » trinh han, trinh quan, trinh toan
nang cong » nang song, dang cong, bang cong
van nang » van quang, van ban, van dong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: ((doi khieu) or (doi khi)) sach - canh trinh van nang cong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi khieu) OR (doi khi)) sach - canh trinh van nang cong tan toan tap.
• Adding a wildcard symbol may retrieve word variants: ((doi khieu) or (doi khi)) sach - canh trinh van nang cong tan toan tap*.