Perhaps you should try some spelling variations:
lang phi » lang phu, lang chai, lang ha
cay phoi » cap phoi, tay hoi, cay cho
so sach » so sanh, bo sach, co sach
ve cham » va cham, ve chat, vu cham
phi cua » phai cua, chi cua, khi cua
ba lang » ban lang, va lang, ba bang
cua tre » cua te, cuu tre, cua triet
ky danh » ky dang
duc ba » duc ban, duc bao, duc va
ky anh » ly anh, ty anh
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 danh) OR (ky anh)) cay phoi. hieu ((ve cam) or (ve cham)) duc ba lang phi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky danh) OR (ky anh)) cay phoi. hieu ((ve cam) OR (ve cham)) duc ba lang phi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky danh) OR (ky anh)) cay phoi. hieu ((ve cam) or (ve cham)) duc ba lang phi cua tre*".