Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
va cham » va chat, va tham
nang xa » nang x, nang ma, mang xa
hanh va » hang va, hanh vi
lang xa » lang ha, dang xay, lang van
xuc van » duc van, luc van, xuc ban
va cua » va chua, via cua, ca cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cac, va cao, va cai

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

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