Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tung can » trung can, tung dan, trung cap
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
can ban » van ban, toan ban

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 can ban cong dan ((than cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh tung can ban cong dan ((than cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung can ban cong dan ((than cau) or (phan tu))*.