Perhaps you should try some spelling variations:
canh trang » hanh trang, banh trang, thanh trang
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
dung cong » dung trong
cong van » cong vang, cong san, song van
va dung » van dung, va duong, vat dung
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang ban, van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu lang) or (nhieu tang)) - ((canh trang) OR (canh tranh)) va dung cong van tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (nhieu tang)) - ((canh trang) OR (canh tranh)) va dung cong van tan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) or (nhieu tang)) - ((canh trang) OR (canh tranh)) va dung cong van tan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (nhieu tang)) - ((canh trang) OR (canh tranh)) va dung cong van tan ban*.