Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cap » truong cao, trung tam
cong tang » cong thang, cong tan, cong lang
ban cong » bang cong, van cong, phan cong
tang van » dang van, hoang van, trong van
cap ban » cap bang, can ban, cac ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu manh)) - thanh trung cap ban cong tang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh trung cap ban cong tang van ban*.