Perhaps you should try some spelling variations:
thien quan » trien quang, lien quan, thien van
tham soc » cham soc, tham nuoc, thai son
dang xay » dang van, van xay
va hanh » van hanh, va thanh, va danh
luu tre » luu tru, cuu tre, luy tre
lang xa » lang ha, lang van
soc va » hoc va, loc va, doc va
vi luu » vi lua
te cac » tu cac, ve cac, te cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky ((lang xa) or (dang xay)) hoi. ((thien quan) or (hieu qua)) tham soc va hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky ((lang xa) OR (dang xay)) hoi. ((thien quan) OR (hieu qua)) tham soc va hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky ((lang xa) or (dang xay)) hoi. ((thien quan) or (hieu qua)) tham soc va hanh vi luu tre*.