Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
doanh khong » doanh thuong, doanh khoa, doanh chung
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoa doanh » toan doanh, hoa dan
cach hoc » cach thuc, cach thoi, dich hoc
cac cong » cua cong
cong hoa » dong hoa, dong hoc, hang hoa
thuoc xa » thuoc ma, thuoc va, thuoc la
tu cach » tu cac
va phan » van phan, va phap, hoa phan

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

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