Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, nam thuc, dam thuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
co sach » bo sach, cuon sach, hoc sach
cam tu » cam thu, nam tu, dam tu
di cua » dai cua, doi cua, de cua

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) or (co sach)) ky lang xa hoi. hieu ve ((cam tuc) or (cam tu)) va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (co sach)) ky lang xa hoi. hieu ve ((cam tuc) OR (cam tu)) va hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (co sach)) ky lang xa hoi. hieu ve ((cam tuc) or (cam tu)) va hanh di cua tre*.