Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
vien cac » vien bach, vien dai, vien da
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
lai cua » dai cua, hai cua, lai chau
dua ban » dia ban, cua ban, qua ban
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai

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 nang mai khoi. hieu ((((ve cam) or (vien cac))) or (va cam)) dua ban thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang mai khoi. hieu ((((ve cam) OR (vien cac))) OR (va cam)) dua ban thanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai khoi. hieu ((((ve cam) or (vien cac))) or (va cam)) dua ban thanh lai cua tre*.