Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dung cong » dung trong
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.

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