Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
truong dao » truong dai, truong cao, truong bo
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong cao, luong va
dang cong » dung cong
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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