Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
cua viet » ca viet, hoa viet, cua vat
ve phan » va phan, ke phan, ve phat
hanh di » hanh vi, hanh de, hang di
xa hanh » xa thanh, xa khanh, va hanh
thuc xa » thuc xay, tuc xa, thuc va
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ve pham » vi pham, v pham, ve phat
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (hoc nhanh)) ky nang xa hoi. hieu ((ve pham) or (ve phan)) thuc xa hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (hoc nhanh)) ky nang xa hoi. hieu ((ve pham) OR (ve phan)) thuc xa hanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (hoc nhanh)) ky nang xa hoi. hieu ((ve pham) or (ve phan)) thuc xa hanh di cua viet*.