Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
su sach » so sach, vu sach
ky dang » ky nang
ky danh » ky anh
nay doc » ngay doc, day doc, nang doc
cua tre » cua te, cuu tre, dua tren
va nay » va ngay, va cay
doc va » duoc va, hoc va, duc va

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 ((ky dang) or (ky danh)) xa hoi. lieu va nay doc va thanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky danh)) xa hoi. lieu va nay doc va thanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ((ky dang) or (ky danh)) xa hoi. lieu va nay doc va thanh va ((cua tre) or (cua triet))*.