Perhaps you should try some spelling variations:
nang phap » nang phat, nang phan, ban phap
nam thuc » nam thuoc, am thuc, nam thu
nang cap » nang cao, nang cham, hang ca
su sach » so sach, vu sach
hoi cua » hoi chuc
hai cua » thai cua, dai cua, lai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang cap) or (nang phap)) hoi. hieu ve nam thuc va hanh ((hai cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang cap) OR (nang phap)) hoi. hieu ve nam thuc va hanh ((hai cua) OR (hoi cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang cap) or (nang phap)) hoi. hieu ve nam thuc va hanh ((hai cua) or (hoi cua)) tre*.