Perhaps you should try some spelling variations:
tham soc » cham soc, tham nuoc, thai son
cua tre » cua te, cuu tre, cua triet
danh vi » hanh vi, dinh vi, danh di
lang xa » lang ha, dang xay, lang van
hieu va » lieu va
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
soc va » hoc va, loc va, doc va
sac ky » sai ky

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 ky) OR (cac ky)) lang xa hoi. ((hieu va) or (hieu qua)) tham soc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (cac ky)) lang xa hoi. ((hieu va) OR (hieu qua)) tham soc va danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) OR (cac ky)) lang xa hoi. ((hieu va) or (hieu qua)) tham soc va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) OR (cac ky)) lang xa hoi. ((hieu va) or (hieu qua)) tham soc va danh vi cua tre*.