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 xuan, tran quang, tran thanh
ho chieu » theo chieu, hoc thieu, doi chieu
tuong va » truong va, thuong va, luong va
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tung va » trung va, vung va, cung 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 (tuong va))) or (dung va)) nhung cong tac tran tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((((tung va) OR (tuong va))) OR (dung va)) nhung cong tac tran tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((((tung va) OR (tuong va))) or (dung va)) nhung cong tac tran tuan".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((((tung va) OR (tuong va))) or (dung va)) nhung cong tac tran tuan*.