Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trong » hanh trang, anh trong, hinh trong
trong van » trong cac
van dung » van dong, xay dung, tin dung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
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: toc thieu sang - hanh trong van dung ((cong dan) or (cong tan)) ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - hanh trong van dung ((cong dan) OR (cong tan)) ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - hanh trong van dung ((cong dan) or (cong tan)) ((toan cau) or (toan tap))*.