Perhaps you should try some spelling variations:
tang tai » hang tai, dung tai, sang tao
sach ky » sac ky, sach ty, sach kem
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
tai roi » lai roi, tai hoi, tai loi
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sach y)) tang tai roi. hieu ve cam xuc ((va danh) or (va dinh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach y)) tang tai roi. hieu ve cam xuc ((va danh) OR (va dinh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach y)) tang tai roi. hieu ve cam xuc ((va danh) or (va dinh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach y)) tang tai roi. hieu ve cam xuc ((va danh) or (va dinh)) vai cua tre*.