Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tung dan » dung dan, trung dai, dung dat
van cong » van dong, van phong, phan cong
cong dan » cong san, cong tan, cong dong
dan than » dan chan, ban than, van than
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 dan) OR (huong dan)) van cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((tung dan) OR (huong dan)) van cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((tung dan) OR (huong dan)) van cong dan than cau*.