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, trung cap
tung cua » tuong cua, dung cua, tang cua
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tran ban » tranh ban, tran van, toan ban

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 - thanh ((tung cua) OR (trung cua)) dung ((cong tan) or (cong san)) tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((tung cua) OR (trung cua)) dung ((cong tan) OR (cong san)) tran ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((tung cua) OR (trung cua)) dung ((cong tan) or (cong san)) tran ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((tung cua) OR (trung cua)) dung ((cong tan) or (cong san)) tran ban*.