Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, lanh tranh
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thieu » toc thieu, hoc hien
dang cong » dung cong
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh

You may be able to get more results by adjusting your search query.

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