Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
vat hanh » vat thanh, van hanh, va hanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
su sac » su sach, su cac
su xac » pu xac, su cac
ve cac » va cac, vien cac
de cua » le cua, te cua, dieu cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky nang xa hoi. hieu ve cac thuc vat hanh ((vai cua) OR (de cua)) tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su xac)) ky nang xa hoi. hieu ve cac thuc vat hanh ((vai cua) or (de cua)) tre*.