Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc vat » thuc vat, thuoc va, thuoc bat
vat thanh » dat thanh, gat thanh, tat thanh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, dang xay
ang xa » lang xa, mang xa, dang xay
va nam » van nam, ha nam, va nay
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 ty ((xang xa) or (ang xa)) hoi. lieu va nam thuoc vat thanh ((vi cua) or (di cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((xang xa) OR (ang xa)) hoi. lieu va nam thuoc vat thanh ((vi cua) OR (di cua)) tu.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((xang xa) or (ang xa)) hoi. lieu va nam thuoc vat thanh ((vi cua) or (di cua)) tu*.