Perhaps you should try some spelling variations:
thuoc dang » thuoc dung, thuoc khang, thuc dan
dang hanh » dang thanh, ban hanh, dang van
sang ky » sang kyo, dang ky, tang ky
nang ma » tang ma, sang ma, nang cao
vi cua » vai cua, di cua
va nam » van nam, ha nam, va nay
san ky » van ky, dan ky, ban ky
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu
le na » le nam, le va, le ta

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((san ky) OR (sang ky)) nang ma hoi. hieu ((va nam) OR (le na)) thuoc dang hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((san ky) OR (sang ky)) nang ma hoi. hieu ((va nam) or (le na)) thuoc dang hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: vu ((san ky) OR (sang ky)) nang ma hoi. hieu ((va nam) or (le na)) thuoc dang hanh vi cua te*.