Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
dung cong » dung trong
cong nang » cong ngang, cong lang, cong nong
nang phan » nang phat, nang thanh, nang quan
phan cau » phan dau, phan cac, phan tu
cong ha » cong hoa, dong ha, cong tac
ha dung » hai dung, hat dung, kha dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sach - thanh cong ha dung cong nang phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - thanh cong ha dung cong nang phan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - thanh cong ha dung cong nang phan cau*.