Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong cao, truong dao
trung va » trang va, trung ha, trung tam
van tuan » van quan, van ban, anh tuan
van tan » van ban, van tai, van thanh

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung va) OR (truong va)) nhung cong ((van tan) OR (van tuan)) cao~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung va) OR (truong va)) nhung cong ((van tan) OR (van tuan)) cao*.