Perhaps you should try some spelling variations:
cau luoc » cau luc, muu luoc, hau loc
luoc ban » luoc can, quoc ban, buoc ban
hanh vai » hanh vi, hanh tai, hanh van
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
ve cau » ke cau, va cau, ve cac

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 hoach)) ky nang xa hoi. hieu ve cau luoc ban ((hanh vai) OR (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky nang xa hoi. hieu ve cau luoc ban ((hanh vai) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu hoach)) ky nang xa hoi. hieu ve cau luoc ban ((hanh vai) OR (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky nang xa hoi. hieu ve cau luoc ban ((hanh vai) OR (hanh va)) cua tre*.