Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
ban hanh » ban hang
so sach » so sanh, bo sach, co sach
ve cham » va cham, ve chat, vu cham
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
song xa » song cua
ky song » k song, ky cong, ky trong
ve cam » ve cac, va cam, ve cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky song xa hoi. hieu ((ve cam) OR (ve cham)) xuc ban hanh ((thai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky song xa hoi. hieu ((ve cam) OR (ve cham)) xuc ban hanh ((thai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky song xa hoi. hieu ((ve cam) OR (ve cham)) xuc ban hanh ((thai cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sach ky song xa hoi. hieu ((ve cam) OR (ve cham)) xuc ban hanh ((thai cua) or (dai cua)) tre*.