Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhieu tang » chieu sang, hieu lang, nhiet nang
duong cong » dung cong, luong cong, duong trong
cong tinh » cong trinh, cong vinh, long tinh
tranh va » tranh van, trang va, trinh va
va duong » van duong, va tuong, va huong
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) or (nhieu tang)) - canh tranh va duong cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (nhieu tang)) - canh tranh va duong cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (nhieu tang)) - canh tranh va duong cong tinh toan tap*.