Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
hoc chieu » hoc thieu, hoc hien, hoc dieu
trinh han » trinh quan
thuc hung » thuc chung, thuc nhung, thuc dung
hung cong » nhung cong, hung cuong, phung cong
than phan » toan phan, thanh pham, thanh nhan
ho chieu » theo chieu, hoc thieu, mot chieu
han thuc » nhan thuc, phan thuc, dan thuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (ho chieu)) sach - trinh han thuc hung cong ((than phan) or (thanh phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) sach - trinh han thuc hung cong ((than phan) OR (thanh phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (ho chieu)) sach - trinh han thuc hung cong ((than phan) or (thanh phan)) tu".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (ho chieu)) sach - trinh han thuc hung cong ((than phan) or (thanh phan)) tu*.