Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
te sai » te tai, te bai, te lai
sai ky » sac ky
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua
o van » so van, do van, ho van

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang xa hoi. hieu ve cam ((o van) or (vo van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang xa hoi. hieu ve cam ((o van) OR (vo van)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. hieu ve cam ((o van) or (vo van)) hanh vi cua tre*.