Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
quan nhung » qua nhung, cua nhung, luan chung
doi chieu » doc hieu, ho chieu, mot chieu
nang quan » ban quan, nang suat
anh nang » ganh nang, anh bang, anh dang
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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 (doi chi)) sach - anh nang quan nhung huong dan ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - anh nang quan nhung huong dan ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) sach - anh nang quan nhung huong dan ((than cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) sach - anh nang quan nhung huong dan ((than cau) or (toan cau))*.