Perhaps you should try some spelling variations:
khang thuoc » khong thuoc, hanh thuoc, khau thuoc
nghiep qua » nghiep quan, nghiep vua, nghiep cua
dang thuoc » dung thuoc
hoc nhanh » hoc nganh, hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
tu sach » thu sach, su sach, te sach
qua mot » quan mot, cua mot, qua tot
mot hoc » mon hoc, mo hoc, mot goc
hoi van » hoi va, hoi dan, hai van

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 hoc tap, nghiep qua mot hoc nhanh ((khang thuoc) or (dang thuoc)) xa hoi van nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghiep qua mot hoc nhanh ((khang thuoc) OR (dang thuoc)) xa hoi van nhan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghiep qua mot hoc nhanh ((khang thuoc) or (dang thuoc)) xa hoi van nhan van*.