Perhaps you should try some spelling variations:
ban hanh » ban hang
so sach » so sanh, bo sach, co sach
lang ha » long ha
hieu ve » hieu va, hieu van
cam cuc » cam xuc, cham cuu, pham cuc
cuc ban » cua ban, cac ban, cuu ban
hai cua » thai cua, hoi cua, lai cua
ve cam » ve cham, ve cac, va cam

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 y ((nang x) or (lang ha)) hoi. hieu ve cam cuc ban hanh ((hai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang x) OR (lang ha)) hoi. hieu ve cam cuc ban hanh ((hai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang x) or (lang ha)) hoi. hieu ve cam cuc ban hanh ((hai cua) or (dai cua)) tre*.