Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
chinh cua » chinh ca, chinh sua, chinh luan
hinh cua » sinh cua, tinh cua, dinh cua
cong ban » cong bang, cong tan, cong dan
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 - hanh ((chinh cua) or (hinh cua)) nhung ((cong ban) OR (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((chinh cua) OR (hinh cua)) nhung ((cong ban) OR (cong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((chinh cua) or (hinh cua)) nhung ((cong ban) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((chinh cua) or (hinh cua)) nhung ((cong ban) OR (cong san)) than cau*.