Perhaps you should try some spelling variations:
trinh viet » ninh viet, trinh vat
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong dang » cong dong, cong dan, cong dung
trinh vi » trinh va, trinh van, trinh tai
trinh ve » trinh he, trinh va, trinh van
dang thi » hoang thi, dang khoi
thi cao » thai cao, thi hao, thi bao

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 - canh ((trinh vi) OR (((trinh ve) OR (trinh viet)))) nhung cong dang thi cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh ((trinh vi) or (((trinh ve) OR (trinh viet)))) nhung cong dang thi cao~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh ((trinh vi) or (((trinh ve) OR (trinh viet)))) nhung cong dang thi cao*.