Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thi cham » thi hai, toc cham, thi ha
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tu cham » toc cham
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
xuc va » duc va, tuc va, luc va

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) or (thu hoach)) ky lang xa hoi. hien ((tu cham) OR (thi cham)) xuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thu hoach)) ky lang xa hoi. hien ((tu cham) OR (thi cham)) xuc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thu hoach)) ky lang xa hoi. hien ((tu cham) OR (thi cham)) xuc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) ky lang xa hoi. hien ((tu cham) OR (thi cham)) xuc va hanh vai cua tre*.