Perhaps you should try some spelling variations:
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
hanh dung » thanh dung, anh dung, hanh dong
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ((((mot chieu) or (doi chieu))) or (toc thieu)) sach - hanh dung luan nang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((mot chieu) OR (doi chieu))) OR (toc thieu)) sach - hanh dung luan nang cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((((mot chieu) or (doi chieu))) or (toc thieu)) sach - hanh dung luan nang cong tac toan cau*.