Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
tran tuan » tran quang, tran thanh, tranh luan
tran xuan » tran quang, tran van
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tung va » trung va, tuong va, vung va

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 - thanh ((tung va) or (dung va)) nhung cong tac ((tran tuan) OR (tran xuan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tung va) OR (dung va)) nhung cong tac ((tran tuan) OR (tran xuan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tung va) or (dung va)) nhung cong tac ((tran tuan) OR (tran xuan))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tung va) or (dung va)) nhung cong tac ((tran tuan) OR (tran xuan))*.