Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
via cua » gia cua, gian cua, giau cua
anh via » anh va, anh bia, anh viet
van anh » van thanh, tuan anh, van minh
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach ty, sach kem
ve cac » va 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: tu ((sach ky) or (sach y)) nang x hoi. hieu ((ve cac) OR (vien cac)) duc van anh via cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang x hoi. hieu ((ve cac) OR (vien cac)) duc van anh via cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach y)) nang x hoi. hieu ((ve cac) OR (vien cac)) duc van anh via cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) nang x hoi. hieu ((ve cac) OR (vien cac)) duc van anh via cua tre*.