Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tung cua » trung cua, tuong cua, dung cua
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cau » toan cau, phan cau, than cap

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