Perhaps you should try some spelling variations:
chua tre » chua tri, cua tre, chua trieu
su sach » so sach, vu sach
ky dang » ky danh
cao loc » cao hoc, cao toc, chon loc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
va chua » vua chua, ca chua, va chu
cao oc » cao hoc, cao toc, cao ngoc

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 nang)) xa hoi. lieu va ((cao loc) OR (cao oc)) va hanh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky nang)) xa hoi. lieu va ((cao loc) OR (cao oc)) va hanh va chua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky dang) or (ky nang)) xa hoi. lieu va ((cao loc) OR (cao oc)) va hanh va chua tre*".