Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
dan toan » van toan, dan than, manh toan
toan 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 ((chieu sang) or (nhieu tang)) - hanh tranh cua ((nhung don) or (hang cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (nhieu tang)) - hanh tranh cua ((nhung don) OR (hang cong)) dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (nhieu tang)) - hanh tranh cua ((nhung don) or (hang cong)) dan toan ban*.