Perhaps you should try some spelling variations:
khang thuoc » khong thuoc, dang thuoc, hanh thuoc
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan van » nhan dan, nhan va, phan van
te sach » toc sach
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien cuu cong hoc nganh ((khong hoc) or (khang thuoc)) xa hoi va nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cuu cong hoc nganh ((khong hoc) OR (khang thuoc)) xa hoi va nhan van.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu cong hoc nganh ((khong hoc) or (khang thuoc)) xa hoi va nhan van*.