Perhaps you should try some spelling variations:
sach ky » sac ky, sach y, sach ty
anh vai » anh bai, anh van, anh tai
duc van » duc va, duc tan, duc manh
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sai ky » sac ky
anh va » hanh va
ve cao » va cao, ve bao, ve cac

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

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