Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
gian lang » gian dan
sach hoc » sach hoi, mach hoc, sach duoc
cach hoc » cach thuc, cach thoi, dich hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va gian » va gianh, van gian, va giai

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