Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
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 cac) or (thu sach)) ky nang ((ma hoi) or (xa hoi)). hieu van cam xuc va hanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu sach)) ky nang ((ma hoi) OR (xa hoi)). hieu van cam xuc va hanh di cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu sach)) ky nang ((ma hoi) or (xa hoi)). hieu van cam xuc va hanh di cua vat*.