Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dang cong » dung cong
cong tac » cong ty
than cap » khan cap, thanh lap, thanh cac

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 - manh ((trung cua) OR (trung cap)) dang cong tac ((than cap) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - manh ((trung cua) OR (trung cap)) dang cong tac ((than cap) or (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - manh ((trung cua) OR (trung cap)) dang cong tac ((than cap) or (phan tu))*.