Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
nang xa » nang x, lang xa, nang ma
cac thu » cach thuc, cac thoi
va hanh » van hanh, va thanh, va danh
luu tre » luu tru, cuu tre, luy tre
su xac » pu xac
su cac » tu cac, su cao, su can
thu va » thuc va, thue va, tu va
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su xac) or (su cac)) ky nang xa hoi. hieu cua cac thu va hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su xac) OR (su cac)) ky nang xa hoi. hieu cua cac thu va hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: ((su xac) or (su cac)) ky nang xa hoi. hieu cua cac thu va hanh vi luu tre*.