Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu tinh) or (hieu lang)) - canh tranh cua nhung cong ((dan toan) or (dan chan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (hieu lang)) - canh tranh cua nhung cong ((dan toan) OR (dan chan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (hieu lang)) - canh tranh cua nhung cong ((dan toan) or (dan chan)) cao*.