Perhaps you should try some spelling variations:
hanh dieu » han dieu, hinh dieu, hoang dieu
nam thuc » nam thuoc, am thuc, nam thu
dieu cua » dieu tra
cua viet » ca viet, hoa viet, cua vat
sang ky » sang kyo, dang ky, tang ky
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
dan ky » van ky
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((dan ky) or (sang ky)) lang xa hoi. hieu va nam thuc va hanh dieu cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((dan ky) OR (sang ky)) lang xa hoi. hieu va nam thuc va hanh dieu cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ((dan ky) or (sang ky)) lang xa hoi. hieu va nam thuc va hanh dieu cua viet*.