Perhaps you should try some spelling variations:
luan thong » luan phong, luan tuong, luat thong
tang luan » dung luan
thong tan » thong than, thong tran, thong tin
theo doi » theo duoi, theo don, theo dong
thao hoc » thai hoc, than hoc, thao khoa
anh tang » anh bang, anh dang, anh nang
tan toan » tan tran, tap toan, van toan
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: ((theo doi) or (thao hoc)) manh - anh tang luan thong thong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo doi) OR (thao hoc)) manh - anh tang luan thong thong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((theo doi) or (thao hoc)) manh - anh tang luan thong thong tan toan ban*.