Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, te sach, tu cach
nam qua » nam quan, nam cua, nam mua
nam xua » nam cua, nam mua, nam luat
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
vi cua » vai cua, di 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 (su sach)) ky lang xa hoi. lieu va ((nam xua) or (nam qua)) ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky lang xa hoi. lieu va ((nam xua) OR (nam qua)) ban hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky lang xa hoi. lieu va ((nam xua) or (nam qua)) ban hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky lang xa hoi. lieu va ((nam xua) or (nam qua)) ban hanh vi cua tre*.