Perhaps you should try some spelling variations:
hieu hoai » hieu hoa, hieu hoat, tieu hoa
danh doi » danh di, thanh doi, dung doi
tang van » dang van, hoang van, trong van
nam thuc » nam thuoc, am thuc, nam thu
hoai nam » hai nam, loai nam, hoang nam
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
tang ma » mang may
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: tu sach ky ((nang cao) or (((tang ma) or (tang van)))) hoi. hieu hoai nam thuc va danh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang cao) OR (((tang ma) OR (tang van)))) hoi. hieu hoai nam thuc va danh doi cua te*.