Perhaps you should try some spelling variations:
chat truc » cau truc
hieu van » hieu va, thien van, hieu ve
chat xuc » chat huu, cam xuc, chao xu
danh dai » danh dau, danh di, danh sai
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va danh » va dinh, va dan, va hanh
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 ty nang x hoi. ((hieu van) or (lieu va)) ((chat truc) OR (chat xuc)) va danh dai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. ((hieu van) OR (lieu va)) ((chat truc) OR (chat xuc)) va danh dai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. ((hieu van) or (lieu va)) ((chat truc) OR (chat xuc)) va danh dai cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. ((hieu van) or (lieu va)) ((chat truc) OR (chat xuc)) va danh dai cua vat*.