Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cau tren » cu tren, dau tren, ca tren
nang ma » tang ma, sang ma, nang cao
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
soc va » hoc va, loc va, doc va
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y ((nang x) or (nang ma)) hoi. lieu va cham soc va hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang x) OR (nang ma)) hoi. lieu va cham soc va hanh va cau tren*.