Perhaps you should try some spelling variations:
cac cach » cai cach, cuoc cach, va cach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac bac » cac bai, cac ban, sach bac
va hang » van hang, va nang, va lang
hang de » hoang de, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang xa hoi. hieu ve ((cac bac) or (cac cach)) va hang de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang xa hoi. hieu ve ((cac bac) OR (cac cach)) va hang de cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. hieu ve ((cac bac) or (cac cach)) va hang de cua tre*.