Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than ban » thanh ban, toan ban, than man

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