Perhaps you should try some spelling variations:
hoc thieu » toc thieu
truong va » truong dai, truong cao, truong dao
bang cong » dang cong, bang song, hang cong
trung va » trang va, trung ha, trung tam
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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) or (hoc hien)) xanh - thanh ((trung va) OR (truong va)) bang cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - thanh ((trung va) OR (truong va)) bang cong tan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - thanh ((trung va) OR (truong va)) bang cong tan than cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - thanh ((trung va) OR (truong va)) bang cong tan than cau*.