Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
pham thu » pham thuc, pham thi, pham tu
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
cua tuc » cua duc, cua tu, luat tuc
thu van » thuc van, thuy van, tu van
te sach » toc sach
ve pham » vi pham, v pham, ve phan
lang xa » lang ha, lang van
hieu ve » hieu va, hieu van

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

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