Perhaps you should try some spelling variations:
ky lang » ky dang, tay lang
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
coc tuc » coc luc, hoc thuc, doc thuc
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
cua tre » cua te, cuu tre, cua triet
su sai » su tai, su hai, su dai
ve coc » ve cuoc, ve cac, ve co
tuc va » thuc va, truc va, tuc xa
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ((((ky lang) OR (ky tang))) or (ky nang)) xa hoi. hieu ve coc tuc va tinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ((((ky lang) OR (ky tang))) OR (ky nang)) xa hoi. hieu ve coc tuc va tinh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ((((ky lang) OR (ky tang))) or (ky nang)) xa hoi. hieu ve coc tuc va tinh va cua tre".
• Adding a wildcard symbol may retrieve word variants: su sai ((((ky lang) OR (ky tang))) or (ky nang)) xa hoi. hieu ve coc tuc va tinh va cua tre*.