Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
lai cua » dai cua, hai cua, lai chau
dan lai » dan loai, dan lap, dan lat
dao duc » giao duc, tao duoc
cao suc » cao su
cua tre » cua te, cuu tre, cua triet
cao duc » giao duc, tao duoc, cho duoc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va dan » ca dan, va dao, va dau

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 nang xa hoi. hieu va ((((cao duc) or (cao suc))) or (dao duc)) va dan lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu va ((((cao duc) OR (cao suc))) OR (dao duc)) va dan lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu va ((((cao duc) or (cao suc))) or (dao duc)) va dan lai cua tre*.