Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
cong van » cong vang, song van, cong tan
cong san » cong tac
tuan cau » toan cau, quan cau, tuan cu
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - canh tranh va dung ((cong van) OR (cong san)) tuan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - canh tranh va dung ((cong van) OR (cong san)) tuan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - canh tranh va dung ((cong van) OR (cong san)) tuan cau*.