Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat truc » cau truc
hieu van » hieu va, thien van, lieu va
danh dai » danh dau, danh di, danh sai
chat xuc » chat huu, cam xuc, chao xu
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
nang xa » lang xa, nang ma, mang xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky ((nang xa) OR (nang x)) hoi. hieu van ((chat truc) or (chat xuc)) va danh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang xa) OR (nang x)) hoi. hieu van ((chat truc) OR (chat xuc)) va danh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((nang xa) OR (nang x)) hoi. hieu van ((chat truc) or (chat xuc)) va danh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((nang xa) OR (nang x)) hoi. hieu van ((chat truc) or (chat xuc)) va danh dai cua triet*.