Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau theo » cau thi, cau tao
su sach » so sach, vu sach
va cham » va chat, va tham
cu tren » tu tren, dua tren
soc ca » soc cua, hoc ca, soc ba
ca dan » cac dan, ca dao
dan di » danh di, dan da, dan de
x hoi » xa hoi, o hoi, x ho

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) or (thu sach)) ky nang x hoi. lieu va cham soc ca dan di ((cau theo) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang x hoi. lieu va cham soc ca dan di ((cau theo) OR (cu tren)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang x hoi. lieu va cham soc ca dan di ((cau theo) or (cu tren))*.