Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, lieu va, hieu ve
chat xuc » chat huu, cam xuc, chat cua
dinh dao » dinh dat, minh dao, dinh cao
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
dao cua » dai cua, day cua, dan cua
cua tre » cua te, cuu tre, cua triet

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 hoi. ((hieu van) OR (thien van)) ((chat xuc) or (chao xu)) va dinh dao cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. ((hieu van) OR (thien van)) ((chat xuc) OR (chao xu)) va dinh dao cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. ((hieu van) OR (thien van)) ((chat xuc) or (chao xu)) va dinh dao cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. ((hieu van) OR (thien van)) ((chat xuc) or (chao xu)) va dinh dao cua tre*.