Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
hanh vai » hanh vi, hanh tai, hanh van
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hanh va » hang va, hanh vi
cua tuc » cua duc, cua tu, cua thuoc

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 ty xang xa hoi. hieu van cham duc va ((hanh vai) or (hanh va)) cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. hieu van cham duc va ((hanh vai) OR (hanh va)) cua tuc.
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. hieu van cham duc va ((hanh vai) or (hanh va)) cua tuc*.