Perhaps you should try some spelling variations:
thuong nganh » trong nganh, thuong ngay, thuong gap
thuong manh » thuong mach, thuong mai, duong manh
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh tung » thanh cong
toan tap » toan ban
tung su » dung su, rung su, tang su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chieu sang)) - thanh tung su dung ((thuong manh) or (thuong nganh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh tung su dung ((thuong manh) OR (thuong nganh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - thanh tung su dung ((thuong manh) or (thuong nganh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - thanh tung su dung ((thuong manh) or (thuong nganh)) toan tap*.