Perhaps you should try some spelling variations:
van khanh » van thanh, van hanh, van anh
van nhanh » van thanh, van hanh, van nhan
van tuan » van quan, van ban, anh tuan
tu sach » thu sach, su sach, te sach
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
tang ho » tang cho, tung ho, tang ha
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
ho hai » hoc hai, pho hai, cho hai

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 ky tang ho hai. hieu ve cac xuc ((van nhanh) or (((van khanh) or (van tuan)))) tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang ho hai. hieu ve cac xuc ((van nhanh) OR (((van khanh) OR (van tuan)))) tri cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang ho hai. hieu ve cac xuc ((van nhanh) or (((van khanh) or (van tuan)))) tri cua tre*.