Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
chieu sach » chinh sach, chiet tach, chieu sang
hang cong » dang cong, hang nong, bang cong
thanh hai » thanh phan, thanh hoa, thanh san
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
anh dung » anh dong, anh huong, sach dung
dung cua » dung luan, dung cho

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 - anh dung cua ((nhung cong) or (hang cong)) dan ((thanh hai) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - anh dung cua ((nhung cong) OR (hang cong)) dan ((thanh hai) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - anh dung cua ((nhung cong) or (hang cong)) dan ((thanh hai) or (khoan cam))*.