Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thai cua » than cua, tai cuc, tri cua
dan thai » dang thai, dan thi, dan than
van cau » van dau, van hau, van chat
thuc va » thuc vat, thuc dan, thuc day
van lam » van nam
lang xa » lang ha, dang xay, lang van
va dan » ca dan, va dao, va dau
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: thuoc sach y ((lang xa) or (nang x)) hoi. hieu ((van lam) or (van cau)) thuc va dan thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((lang xa) OR (nang x)) hoi. hieu ((van lam) OR (van cau)) thuc va dan thai cua te.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((lang xa) or (nang x)) hoi. hieu ((van lam) or (van cau)) thuc va dan thai cua te*.