Perhaps you should try some spelling variations:
trung thanh » truong thanh
thieu xanh » chieu xanh, hieu manh, thien anh
trung tuan » trung tam, tran tuan, truong thanh
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

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