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
cach hoc » cach thuc, cach thoi, dich hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
hang dau » hang va, hang tai
vu cach » va cach, ve cach, vu bach
cuu hoa » cuu khoa, cuu hoan, cau hoa

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