Perhaps you should try some spelling variations:
khue cua » khoe cua, khien cua, khung cua
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
qua cai » qua hai, qua cac, qua ca
duc van » duc va, duc manh, duc phan
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ty nang ma hoi. hieu qua cai ((duc van) or (duc tan)) minh khue cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu qua cai ((duc van) OR (duc tan)) minh khue cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu qua cai ((duc van) or (duc tan)) minh khue cua tre*.