Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (((chieu tinh) OR (trieu tinh)))) - canh tranh va dung cong tap quan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (((chieu tinh) OR (trieu tinh)))) - canh tranh va dung cong tap quan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (((chieu tinh) OR (trieu tinh)))) - canh tranh va dung cong tap quan cao*.