Perhaps you should try some spelling variations:
luan chung » luan chinh
thong than » thong thanh, thong phan, thong nhan
tieu xanh » tieu danh, chieu xanh, dieu hanh
luat cong » thuat cong, luat chung, cua cong
anh tang » anh bang, anh dang, anh nang
than tan » thanh tan, than tuan, phan tan
tan cau » toan cau, van cau, tan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - anh tang ((luat cong) or (luan chung)) thong than tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - anh tang ((luat cong) OR (luan chung)) thong than tan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh tang ((luat cong) or (luan chung)) thong than tan cau*.