Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
thong duong » tuong duong, thong dung, thong huong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhanh dung » nhanh dong, hanh dung, nhanh hung
dung cua » dung luan, dung cho
van toan » van tuan, van tan, van thanh
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: hoc ((chieu xanh) OR (chieu sach)) - nhanh dung cua ((thong thuong) or (thong duong)) van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - nhanh dung cua ((thong thuong) OR (thong duong)) van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sach)) - nhanh dung cua ((thong thuong) or (thong duong)) van toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sach)) - nhanh dung cua ((thong thuong) or (thong duong)) van toan cao*.