Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh vai » hanh vi, hanh tai, hanh van
hau phuc » huu phuc, cau phuc, hanh phuc
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
va hau » van hau, va chau, vat hau

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