Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
bai ky » ban ky, sai ky, dai ky
bac ky » cac ky, ban ky, sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((bai ky) or (bac ky)) nang xa hoi. hieu vu cham ((xuc van) OR (duc van)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((bai ky) OR (bac ky)) nang xa hoi. hieu vu cham ((xuc van) OR (duc van)) hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bai ky) or (bac ky)) nang xa hoi. hieu vu cham ((xuc van) OR (duc van)) hanh dai cua tre*".