Perhaps you should try some spelling variations:
vu khac » vu kham, vu khanh, bui khac
ky hang » ky nang, ly hang, ky dang
hanh va » hanh vi
cua tre » cua te, cuu tre, cua triet
ve cac » vien cac
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
va hoa » van hoa, va hoc, ma hoa
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac ky hang va hoa. hieu ((ve cac) or (va cac)) ((luc va) or (tuc va)) hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac ky hang va hoa. hieu ((ve cac) OR (va cac)) ((luc va) OR (tuc va)) hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: vu khac ky hang va hoa. hieu ((ve cac) or (va cac)) ((luc va) or (tuc va)) hanh va cua tre*.