Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cham duc » pham duc, cham soc, pham duy
hanh vai » hanh vi, hanh tai, hanh van
tu sach » su sach, te sach, tu cach
xang xa » lang xa, mang xa, ang xa
va cham » va chat, va tham
hanh va » hang va, hanh vi
cua cu » cua chu, cua cau, cua su

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) OR (thu sach)) ty xang xa hoi. lieu va cham duc va ((hanh vai) or (hanh va)) cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty xang xa hoi. lieu va cham duc va ((hanh vai) OR (hanh va)) cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty xang xa hoi. lieu va cham duc va ((hanh vai) or (hanh va)) cua cu".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ty xang xa hoi. lieu va cham duc va ((hanh vai) or (hanh va)) cua cu*.