Perhaps you should try some spelling variations:
te sach » toc sach
van cam » van lam, van cau, van dam
van hai » van ha, van chat, van hanh
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. hieu ((((van cam) or (van hai))) or (van nam)) luc va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ((((van cam) OR (van hai))) OR (van nam)) luc va tinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((((van cam) or (van hai))) or (van nam)) luc va tinh vi cua tre*.