Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
dinh vai » dinh van, dinh vi, dinh va
van dinh » van minh, van dich, va dinh
lang mai » lang dai, lang hai, sang mai
thuc van » thuc vat, thuc dan, thuc va
lang man » lang van, lang ban, dang manh
vai cua » dai cua, hai cua, lai cua
ve nham » ve nha, ve cham
hieu ve » hieu va, hieu van
sach ky » sac ky, sach ty, sach kem
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sach y)) ((lang mai) or (lang man)) hoi. hieu ve nham thuc van dinh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) ((lang mai) OR (lang man)) hoi. hieu ve nham thuc van dinh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach y)) ((lang mai) or (lang man)) hoi. hieu ve nham thuc van dinh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach y)) ((lang mai) or (lang man)) hoi. hieu ve nham thuc van dinh vai cua te*.