Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
tong cong » trong cong, cong cong, dung cong
cong dan » cong san, cong tan, huong dan
nhan tai » hang tai, van tai
toan tai » toan tap, doanh tai, toan ban
nhan va » nhan dan, nhan tao, phan van
han va » hang va, hanh va, ban va

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 ((han va) OR (nhan va)) tong cong dan ((nhan tai) or (toan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - hanh ((han va) OR (nhan va)) tong cong dan ((nhan tai) OR (toan tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sang - hanh ((han va) OR (nhan va)) tong cong dan ((nhan tai) or (toan tai))".
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - hanh ((han va) OR (nhan va)) tong cong dan ((nhan tai) or (toan tai))*.