Perhaps you should try some spelling variations:
vu khanh » vu thanh, van khanh, duy khanh
khanh ky » hanh ky, thanh ky, khanh ly
hieu van » hieu va, thien van, lieu va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cau » van dau, van hau, van chat
truc va » thuc va, trung va
ma cua » manh cua, mang cua
ca cua » co 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 khanh ky lang xa hoi. hieu van cau ((truc va) or (thuc vat)) thanh ((ma cua) or (ca cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khanh ky lang xa hoi. hieu van cau ((truc va) OR (thuc vat)) thanh ((ma cua) OR (ca cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu khanh ky lang xa hoi. hieu van cau ((truc va) or (thuc vat)) thanh ((ma cua) or (ca cua)) tre*.