Perhaps you should try some spelling variations:
hanh may » hanh mau, hanh ngay, thanh mau
tinh hai » tinh thai, tinh chat, trinh han
hai cua » thai cua, dai cua, hoi cua
va tinh » may tinh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
so sach » bo sach, co sach, hoc sach
hanh ma » hanh mau, hanh va, anh ma
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
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) OR (so sanh)) tu ((hanh ma) or (hanh may)) hoi. hieu ve cam duc va tinh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) tu ((hanh ma) OR (hanh may)) hoi. hieu ve cam duc va tinh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) tu ((hanh ma) or (hanh may)) hoi. hieu ve cam duc va tinh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) tu ((hanh ma) or (hanh may)) hoi. hieu ve cam duc va tinh hai cua tre*.