Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
su sach » vu sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
van bac » van ban, van bao, van hac
van cac » van hac, van cau, dan cac
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
so sach » so sanh, bo sach, co sach
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty hang xa hoi. hieu ((van cac) OR (van bac)) luc va hanh vai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty hang xa hoi. hieu ((van cac) OR (van bac)) luc va hanh vai cua tu~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty hang xa hoi. hieu ((van cac) OR (van bac)) luc va hanh vai cua tu*.