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
manh cua » doanh cua
cong tac » cong ty
tran cau » tran chau, toan cau, tra cau
ban cua » ban quan
ran cau » van cau, ban cau, can cau

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 - lanh ((manh cua) OR (ban cua)) nhung cong tac ((tran cau) OR (ran cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - lanh ((manh cua) or (ban cua)) nhung cong tac ((tran cau) OR (ran cau))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - lanh ((manh cua) or (ban cua)) nhung cong tac ((tran cau) OR (ran cau))*.