Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
ty nang » ky nang, ty xang, ty hang
cua tre » cuu tre, cua triet, dua tren
bao xuc » bao luc, bao thuc
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va thanh, va danh
cua te » cua tu
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: so sach ty nang x hoi. hieu van ((bao xuc) or (va thuc)) va hanh trinh ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang x hoi. hieu van ((bao xuc) OR (va thuc)) va hanh trinh ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x hoi. hieu van ((bao xuc) or (va thuc)) va hanh trinh ((cua tre) or (cua te))*.