Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
xuc cam » phuc cam
cua tre » cua te, cuu tre, cua triet
dan vi » doan vi, don vi, gan vi
dan va » doan va, dan ca, ban va

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

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