Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
vu khach » vu khac, vay khach, cua khach
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
vu khanh » vu thanh, van khanh, duy khanh
van nham » van nam, van nhan, van tham
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
lai cua » dai cua, hai cua, lai chau
nang xa » lang xa, nang ma, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khach) or (vu khanh)) thu ((nang xa) or (nang x)) hoi. hieu van nham thuc va hanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (vu khanh)) thu ((nang xa) OR (nang x)) hoi. hieu van nham thuc va hanh lai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (vu khanh)) thu ((nang xa) or (nang x)) hoi. hieu van nham thuc va hanh lai cua vat*.