Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong dan » cong tan, cong dong, cong tac
cong san » cong tac
hang dau » hang va, hang tai

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