Perhaps you should try some spelling variations:
tham soc » cham soc, tham nuoc, ham so
thai son » thai den, thai do, thai hoc
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
y sang » duy sang
_ sang » _ san
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y sang) OR (_ sang)) ma hoi. lieu va ((tham soc) or (thai son)) va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y sang) OR (_ sang)) ma hoi. lieu va ((tham soc) OR (thai son)) va danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y sang) OR (_ sang)) ma hoi. lieu va ((tham soc) or (thai son)) va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y sang) OR (_ sang)) ma hoi. lieu va ((tham soc) or (thai son)) va danh vi cua tre*.