Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nganh nong » nganh cong
nong thuoc » dong thuoc, long thuoc, khong thuoc
hoc nganh » hoc nhanh
thuoc xa » thuoc ma, thuoc va, thuoc la
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
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) or (thuat sach)) hoc tap, nghien cuu mon hoc nganh nong thuoc xa hoi va phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) hoc tap, nghien cuu mon hoc nganh nong thuoc xa hoi va phan van.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) hoc tap, nghien cuu mon hoc nganh nong thuoc xa hoi va phan van*.