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
doanh cua » doanh luan
manh toan » thanh toan, anh tuan, tinh toan
manh cua » ban cua
van toan » van tuan, van tan, van thanh

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