Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
nghien cau » nghien cuu, nghiep cau, nghiep cay
cau hoang » cam hoang, cap hoang, cau hoa
hoang hoc » hoang hoa, hoang hon, hoang phuoc
hoc nganh » hoc nhanh
thuoc xa » thuoc ma, thuoc va, thuoc la
phan dau » phan tu, hang dau
vu cach » va cach, ve cach, tu cach
va phan » van phan, va phat, va phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu cach) or (vu bach)) hoc tap, nghien cau hoang hoc nganh khong thuoc xa hoi va phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu cach) OR (vu bach)) hoc tap, nghien cau hoang hoc nganh khong thuoc xa hoi va phan dau.
• Adding a wildcard symbol may retrieve word variants: ((vu cach) or (vu bach)) hoc tap, nghien cau hoang hoc nganh khong thuoc xa hoi va phan dau*.