Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu
trung cap » truong cao, trung tam
van thanh » ban thanh, van tuan
thanh cha » thanh ha, thanh nha, thanh phan
dung cua » dung luan, dung cho
cong van » cong vang, cong san, song van

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) or (hoc thieu)) xanh - hanh ((dung cua) or (trung cap)) nhung cong van thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (hoc thieu)) xanh - hanh ((dung cua) OR (trung cap)) nhung cong van thanh cha.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) xanh - hanh ((dung cua) or (trung cap)) nhung cong van thanh cha*.