Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hien xanh » hien hanh, hien nhanh, chieu xanh
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
cong tap » cuong tap, cong tac, cong tan
tap quan » tac quan, hai quan
quan cao » quang cao, quan cau, quan ao
va dung » van dung, va duong, vat dung

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

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