Perhaps you should try some spelling variations:
san thanh » ban thanh, van thanh, son thanh
san hanh » ban hanh, van hanh, dan hanh
ve giai » va giai, ve giao, de giai
cua tre » cua te, cuu tre, cua triet
ve giap » ve giao
nang xa » nang x, lang xa, nang ma
bac ky » cac ky, ban ky, sac ky
de cua » le cua, te cua, dieu cua
su bac » xu bac, du bac, su cac

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 bac ky nang xa hoi. hieu ((ve giap) OR (ve giai)) nguoi ((san hanh) OR (san thanh)) de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su bac ky nang xa hoi. hieu ((ve giap) OR (ve giai)) nguoi ((san hanh) or (san thanh)) de cua tre~".
• Adding a wildcard symbol may retrieve word variants: su bac ky nang xa hoi. hieu ((ve giap) OR (ve giai)) nguoi ((san hanh) or (san thanh)) de cua tre*.