Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ha » thanh hoa, thanh hai, nhanh ha
vien cac » vien bach, vien dai, vien da
sach kem » hanh kem
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
sac ky » cac ky, sai ky
bo van » vo van, so van, do van
ha cua » hoa cua, hai cua, nha cua
ve cac » va cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach kem) or (sac ky)) lang xa hoi. hieu ((ve cac) OR (vien cac)) bo van thanh ha cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach kem) OR (sac ky)) lang xa hoi. hieu ((ve cac) OR (vien cac)) bo van thanh ha cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach kem) or (sac ky)) lang xa hoi. hieu ((ve cac) OR (vien cac)) bo van thanh ha cua tre*".