Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
san toan » van toan, dan toan, xuan toan

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 - ((anh tang) or (anh dang)) cua nhung cong ((san toan) OR (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((anh tang) OR (anh dang)) cua nhung cong ((san toan) OR (manh toan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((anh tang) or (anh dang)) cua nhung cong ((san toan) OR (manh toan)) cao*".