Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thieu » hoc hien
trang qua » trong qua, trong quan, trang tuan
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong tac » cong ty
khan cap » khan ap, than cap, khoan cam
phan cau » phan dau, phan cac, phan tu

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) OR (toc thieu)) xanh - hanh trang qua dung cong tac ((khan cap) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) xanh - hanh trang qua dung cong tac ((khan cap) or (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) xanh - hanh trang qua dung cong tac ((khan cap) or (phan cau))*.