Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
chieu sang » chieu sach, chieu xanh, nhieu tang
truong cao » truong dai
hieu lang » hieu quang, nhieu tang, hieu van
duong van » duong va, luong va, dang van
dung cua » dung luan, dung cho
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan 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 ((chieu sang) OR (hieu lang)) - thanh ((dung cua) or (truong cao)) nhung duong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - thanh ((dung cua) OR (truong cao)) nhung duong van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - thanh ((dung cua) or (truong cao)) nhung duong van toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - thanh ((dung cua) or (truong cao)) nhung duong van toan cao*.