Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dinh chi » dinh thi, dinh tri, dinh moi
tham soc » cham soc, tham nuoc, thai son
van tham » van thanh, van tuan, van chat
va hanh » van hanh, va thanh, va danh
lang xa » lang ha, dang xay, lang van
dang xa » dang xay, dang ha, dang va
sac ky » cac ky, sai ky
soc va » hoc va, loc va, doc va
vi cuu » vi luu, vinh cuu
te sac » te sach, te cac, te san

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: te sac ky ((dang xa) OR (lang xa)) hoi. hieu van tham soc va hanh ((vi cuu) OR (dinh chi)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((dang xa) OR (lang xa)) hoi. hieu van tham soc va hanh ((vi cuu) or (dinh chi)) tre~".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((dang xa) OR (lang xa)) hoi. hieu van tham soc va hanh ((vi cuu) or (dinh chi)) tre*.