Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
va hang » van hang, va nang, va lang
hai cua » dai cua, hoi cua, lai cua
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu va ((pham duc) or (cao duc)) va hang ((hai cua) OR (thai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu va ((pham duc) OR (cao duc)) va hang ((hai cua) OR (thai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu va ((pham duc) or (cao duc)) va hang ((hai cua) OR (thai cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu va ((pham duc) or (cao duc)) va hang ((hai cua) OR (thai cua)) te*.