Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuc nhung » phuc nhung, thu nhung, thuc chung
toan thuc » toan hoc, dan thuc, nhan thuc
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong tac, cong san, cong thanh
phan cac » nhan cach, phan dau, phan lap

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

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