Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
truong va » truong dai, truong cao, truong dao
hang cong » dang cong, hang nong, bang cong
trung ha » trung hoc, trung tam, trung cap
cong ban » cong bang, cong san, cong tan
ban quan » van quan
quan ha » quan he

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 xanh - thanh ((truong va) or (trung ha)) hang cong ban quan ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh ((truong va) OR (trung ha)) hang cong ban quan ha.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh ((truong va) or (trung ha)) hang cong ban quan ha*.