Perhaps you should try some spelling variations:
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
cau luc » cau truc, cau phuc
cam luc » cam xuc
ky dang » ky nang, ky danh
ty dang » ty xang, ty hang, ty dong
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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 ((ty dang) OR (ky dang)) xa hoi. lieu va ((cam luc) or (cau luc)) va tinh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty dang) OR (ky dang)) xa hoi. lieu va ((cam luc) OR (cau luc)) va tinh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty dang) OR (ky dang)) xa hoi. lieu va ((cam luc) or (cau luc)) va tinh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty dang) OR (ky dang)) xa hoi. lieu va ((cam luc) or (cau luc)) va tinh vi cuu tre*.