Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
chinh cua » chinh ca, chinh sua, chinh luan
nhu hieu » nhu hien, nha hieu, nho hieu
hinh cua » sinh cua, tinh cua, dinh cua
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: nhu hieu lang - hanh ((chinh cua) OR (hinh cua)) dung ((cong dan) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhu hieu lang - hanh ((chinh cua) OR (hinh cua)) dung ((cong dan) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhu hieu lang - hanh ((chinh cua) OR (hinh cua)) dung ((cong dan) or (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: nhu hieu lang - hanh ((chinh cua) OR (hinh cua)) dung ((cong dan) or (cong tan)) toan cau*.