Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
giau cua » gian cua, gia cua, dieu cua
van anh » tuan anh, van minh
sach ky » sac ky, sach y, sach kem
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cac lo » cac lop, cac co, cac bo
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ky) OR (sach ty)) nang x hoi. hieu ve cac lo ((van anh) or (van thanh)) giau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ky) OR (sach ty)) nang x hoi. hieu ve cac lo ((van anh) OR (van thanh)) giau cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ky) OR (sach ty)) nang x hoi. hieu ve cac lo ((van anh) or (van thanh)) giau cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ky) OR (sach ty)) nang x hoi. hieu ve cac lo ((van anh) or (van thanh)) giau cua tre*.