Perhaps you should try some spelling variations:
nganh dong » nganh cong, nhanh dong, nganh nong
dong thuoc » dung thuoc, dang thuoc, don thuoc
hoc nganh » hoc nhanh
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
thuoc va » thuc va, thuoc ma, thuong va
tu sach » thu sach, su sach, tu cach
te sach » toc sach
va phap » va phat, ban phap
phap va » phap vat, pham va, pham van
va hoi » xa hoi, va hoc, va hoa

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 (te sach)) hoc tap, nghien cuu tong hoc nganh dong thuoc va hoi va phap va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) hoc tap, nghien cuu tong hoc nganh dong thuoc va hoi va phap va.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) hoc tap, nghien cuu tong hoc nganh dong thuoc va hoi va phap va*.