Perhaps you should try some spelling variations:
nganh thong » nganh khong, nhanh chong, anh thong
nganh cong » nhanh chong, thanh cong
sach doi » sach hoi, sach moi, sach dao
van nhan » van phan, van thanh, danh nhan
tu sach » thu sach, su sach, te sach
doi tap » doi tac, doi dap, doi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hai van » thai van, ha van, hai tan
nhan va » nhan tai, nhan dan, nhan tao
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach doi tap, nghien cuu mon hoc ((nganh thong) or (nganh cong)) hoc ma hai van nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach doi tap, nghien cuu mon hoc ((nganh thong) OR (nganh cong)) hoc ma hai van nhan va*.