Perhaps you should try some spelling variations:
thuan loi » thuy loi, xuan loi, thuat doi
dang xay » dang van
tuan loc » tuan le, van loc, xuan loi
van hanh » van thanh, ban hanh, van anh
luu tre » luu tru, cuu tre, luy tre
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky ((dang xay) OR (van xay)) hoi. hieu qua ((tuan loc) or (thuan loi)) van hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky ((dang xay) OR (van xay)) hoi. hieu qua ((tuan loc) OR (thuan loi)) van hanh vi luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky ((dang xay) OR (van xay)) hoi. hieu qua ((tuan loc) or (thuan loi)) van hanh vi luu tre".
• Adding a wildcard symbol may retrieve word variants: te san ky ((dang xay) OR (van xay)) hoi. hieu qua ((tuan loc) or (thuan loi)) van hanh vi luu tre*.