Perhaps you should try some spelling variations:
trinh quan » trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap
cho chu » cho thue

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) or (cho chu)) xanh - hanh ((trinh quan) or (tinh quang)) tong cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (cho chu)) xanh - hanh ((trinh quan) OR (tinh quang)) tong cong san than cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (cho chu)) xanh - hanh ((trinh quan) or (tinh quang)) tong cong san than cau*.