Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
cham xuc » cam xuc, chat xuc, cham soc
ky danh » ky anh, ky dang
don vai » don vi, don va, doi vai
den vai » den va, den vay, den vi
xuc va » duc va, tuc va, luc va
cua te » cua tu

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: doc sach ((ky danh) OR (ky nang)) xa hoi. hieu van cham xuc va ((don vai) OR (den vai)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ((ky danh) or (ky nang)) xa hoi. hieu van cham xuc va ((don vai) OR (den vai)) cua te~".
• Adding a wildcard symbol may retrieve word variants: doc sach ((ky danh) or (ky nang)) xa hoi. hieu van cham xuc va ((don vai) OR (den vai)) cua te*.