Perhaps you should try some spelling variations:
thuc thuc » hoc thuc
chat thuc » thuat thuc, nhan thuc, chat thai
thu sach » tu sach, thuat sach, thuoc sach
dinh dai » dinh dat, dinh dao, dinh tai
sinh dai » sinh thai, si dai, sinh vat
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
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: thu sach y nang xa hoi. hieu va ((chat thuc) or (thuc thuc)) va ((dinh dai) OR (sinh dai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. hieu va ((chat thuc) OR (thuc thuc)) va ((dinh dai) OR (sinh dai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. hieu va ((chat thuc) or (thuc thuc)) va ((dinh dai) OR (sinh dai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu va ((chat thuc) or (thuc thuc)) va ((dinh dai) OR (sinh dai)) cua tre*.