Perhaps you should try some spelling variations:
thanh tung » thanh cong
tieu sang » chieu sang, tieu dung, tiem nang
tung vap » tung va, trung van, tuong vao
vap dung » van dung, ap dung, va dung
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
toan tap » toan ban
tan tap » han tap, tan tat, man tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sang - thanh tung vap dung ((cong van) OR (song van)) ((tan tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sang - thanh tung vap dung ((cong van) OR (song van)) ((tan tap) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sang - thanh tung vap dung ((cong van) OR (song van)) ((tan tap) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - thanh tung vap dung ((cong van) OR (song van)) ((tan tap) or (toan tap))*.