Perhaps you should try some spelling variations:
hieu sang » chieu sang, hieu lang, hieu quang
chinh van » chinh va, chinh ban, chinh can
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
van dung » van dong, xay dung, tin dung
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tai
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - hanh chinh van dung cong dan ((((toan cau) or (toan cao))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - hanh chinh van dung cong dan ((((toan cau) OR (toan cao))) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - hanh chinh van dung cong dan ((((toan cau) or (toan cao))) or (toan tap))*.