Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
hoc thieu » toc thieu
van thanh » ban thanh, van tuan
trinh tu » trinh ky
trinh do » trinh ky
cong van » cong vang, cong san, song van

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) OR (hoc hien)) xanh - canh ((trinh tu) OR (trinh do)) nhung cong van thanh chau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - canh ((trinh tu) OR (trinh do)) nhung cong van thanh chau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - canh ((trinh tu) OR (trinh do)) nhung cong van thanh chau*.