Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cau xuc » cam xuc, cau truc, chat xuc
cau luc » cau truc, cau phuc
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
de cua » le cua, te cua, dieu cua
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu van ((cau xuc) OR (cau luc)) va dan ((dai cua) or (de cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van ((cau xuc) OR (cau luc)) va dan ((dai cua) OR (de cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu van ((cau xuc) OR (cau luc)) va dan ((dai cua) or (de cua)) viet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van ((cau xuc) OR (cau luc)) va dan ((dai cua) or (de cua)) viet*.