Perhaps you should try some spelling variations:
cham xuc » chat xuc, cham soc, pham duc
tu sach » thu sach, su sach, te sach
va nang » van nang, da nang, kha nang
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de 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 sach ((va nang) OR (cam nang)) xa hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((va nang) OR (cam nang)) xa hoi. hieu ve ((cham xuc) OR (cam xuc)) va hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((va nang) OR (cam nang)) xa hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((va nang) OR (cam nang)) xa hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh di cua tre*.