Perhaps you should try some spelling variations:
nang thuong » hang thuong, nang truong, dang thuong
thuong tinh » khuong tinh, thuong binh, truong tinh
toc chieu » toc thieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
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) OR (doc hieu)) 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) OR (doc hieu)) xanh - thanh ((trang va) OR (tran van)) nang thuong tinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc chieu) OR (doc hieu)) xanh - thanh ((trang va) or (tran van)) nang thuong tinh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((toc chieu) OR (doc hieu)) xanh - thanh ((trang va) or (tran van)) nang thuong tinh toan cao*.