Perhaps you should try some spelling variations:
nang thuong » hang thuong, nang truong, dang thuong
thuong tinh » khuong tinh, thuong binh, truong tinh
chieu xanh » chieu sach, chieu sang, chieu tinh
toc chieu » toc thieu, doc hieu, hoc thieu
trang va » hang va
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: toc chieu xanh - thanh ((trang va) or (tran van)) nang thuong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu xanh - thanh ((trang va) OR (tran van)) nang thuong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: toc chieu xanh - thanh ((trang va) or (tran van)) nang thuong tinh toan cao*.