Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
tuong cua » truong cua, huong cua, thong cua
tung cua » trung cua, dung cua, tang cua
cong tac » cong ty
toan ban » van ban

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 - thanh ((tung cua) OR (tuong cua)) thong cong tac ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((tung cua) OR (tuong cua)) thong cong tac ((toan tap) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((tung cua) OR (tuong cua)) thong cong tac ((toan tap) or (toan ban))*.