Perhaps you should try some spelling variations:
tsinh trung » trinh trung, tinh trung, trinh truong
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
thanh lap » thanh san, thanh hai, thanh van
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
phan lap » phan dau

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 - ((sinh trung) or (tsinh trung)) va nhung cong san ((thanh lap) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((sinh trung) OR (tsinh trung)) va nhung cong san ((thanh lap) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((sinh trung) or (tsinh trung)) va nhung cong san ((thanh lap) or (phan lap))*.