Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
dang xay » dang van
tu sach » thu sach, su sach, te sach
ca phuc » cau phuc, xa phuc, va phuc
phuc du » phuc vu, phuc su, thuc du
du hanh » dieu hanh, duy khanh, luu hanh
qua ca » qua cac, qua cua, qua cai
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 _ ((dang xay) OR (van xay)) hoi. hieu qua ca phuc du hanh vi ((cua te) or (cua thuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ ((dang xay) OR (van xay)) hoi. hieu qua ca phuc du hanh vi ((cua te) OR (cua thuoc))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ ((dang xay) OR (van xay)) hoi. hieu qua ca phuc du hanh vi ((cua te) or (cua thuoc))*".