Perhaps you should try some spelling variations:
luan thong » luan phong, luan tuong, luat thong
thanh dung » thanh duong, thanh tung, thanh hung
cong ngang » cong nhan, cong lang, cong nong
cong quang » luong quang, thong quang, duong quang
thien anh » thien danh, tien anh, thien thanh
hien anh » hien hanh, dien anh, tien anh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien anh) OR (thien anh)) - thanh dung luan thong ((cong ngang) or (cong quang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (thien anh)) - thanh dung luan thong ((cong ngang) OR (cong quang)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (thien anh)) - thanh dung luan thong ((cong ngang) or (cong quang)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (thien anh)) - thanh dung luan thong ((cong ngang) or (cong quang)) toan ban*.