Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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 thieu tinh - canh ((((tranh va) OR (trinh va))) OR (trinh quan)) dung cong dan phan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh ((((tranh va) or (trinh va))) or (trinh quan)) dung cong dan phan cau*.