Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, phong chong
hoc thieu » toc thieu, hoc hien
trung cao » truong cao, trung cap, trung co
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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