Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
tham soc » cham soc, tham nuoc, thai son
luu tre » luu tru, cuu tre, luy tre
te sach » toc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi luu » vi lua
te sac » te cac, te san
soc va » hoc va, loc va, doc va

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

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