Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
sach hoi » sach doi, sach moi, cach thoi
thuoc xa » thuoc ma, thuoc va, thuoc la
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va nha
va phan » van phan, va phat, va phap

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 hoi tap, nghien cuu mon hoc nganh khong thuoc xa hoi ((va nhan) OR (va phan)) va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi tap, nghien cuu mon hoc nganh khong thuoc xa hoi ((va nhan) OR (va phan)) va".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu mon hoc nganh khong thuoc xa hoi ((va nhan) OR (va phan)) va*.