Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
cong dan » cong san, cong tan, cong dong
toan cao » toan tap
toan ban » van ban
mang va » mang vua, hang va, bang va
va dung » van dung, va duong, vat dung

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