Perhaps you should try some spelling variations:
thanh nhung » thanh hung, hanh nhung, tranh nhung
tran thanh » ban thanh, van thanh, quan thanh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tran » hanh trang, thanh tran, hanh tram
cong van » cong vang, cong san, song van
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chinh sach) or (hieu lang)) - hanh tran thanh nhung cong van ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chinh sach) OR (hieu lang)) - hanh tran thanh nhung cong van ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chinh sach) or (hieu lang)) - hanh tran thanh nhung cong van ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi ((chinh sach) or (hieu lang)) - hanh tran thanh nhung cong van ((toan tap) OR (toan ban))*.