Perhaps you should try some spelling variations:
cong quang » luong quang, thong quang, duong quang
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tran » hanh trang, thanh tran, hanh tram
van thong » van thuong, van phong, va thong
cong vang » cong lang, cong ngang, cong san
tran van » luan van
toan cao » toan ban, toan tap

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 - hanh tran van thong ((cong vang) or (cong quang)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tran van thong ((cong vang) OR (cong quang)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tran van thong ((cong vang) or (cong quang)) toan cao*.