Perhaps you should try some spelling variations:
van cham » van tham, va cham, gian cham
van pham » san pham, van phan, van phat
van chat » cao chat
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc 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: tu sach y nang x hoi. hieu ((((van cham) OR (van pham))) or (van chat)) xuc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((((van cham) OR (van pham))) OR (van chat)) xuc va danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu ((((van cham) OR (van pham))) or (van chat)) xuc va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((((van cham) OR (van pham))) or (van chat)) xuc va danh vi cua tre*.