Perhaps you should try some spelling variations:
nghiep thuoc » nghiem thuoc, nghiep thuc, nghiep theo
thuoc dong » thuoc dung, thuoc cong, thuoc dang
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
khanh hoa » thanh hoa, hang hoa
khoa cang » khoa cong, khoa dang, khong cang
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
dong hoc » dong co, dong luc
khoa can » khoa cam, khoa cap, khoi can
gian lan » gian lang, gian dan, giang van
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach hoc tap, nghiep thuoc dong hoc khanh hoa hoc xa ((khoa can) or (khoa cang)) gian lan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach hoc tap, nghiep thuoc dong hoc khanh hoa hoc xa ((khoa can) OR (khoa cang)) gian lan.
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghiep thuoc dong hoc khanh hoa hoc xa ((khoa can) or (khoa cang)) gian lan*.