Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
thanh than » thanh thang, thanh toan, thanh phan
hieu van » hieu va, thien van, hieu ve
nang xa » nang x, lang xa, nang ma
bac luc » bao luc
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va

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 van) or (lieu va)) bac luc va ((thanh than) OR (thanh thanh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. ((hieu van) OR (lieu va)) bac luc va ((thanh than) OR (thanh thanh)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. ((hieu van) or (lieu va)) bac luc va ((thanh than) OR (thanh thanh)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. ((hieu van) or (lieu va)) bac luc va ((thanh than) OR (thanh thanh)) cua tre*.