Perhaps you should try some spelling variations:
van thanh » ban thanh
vien cac » vien bach, vien dai, vien da
van tuan » van quan, van ban, anh tuan
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
ve cac » va cac
su sac » su sach, su cac, su xac

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

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