Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
dau tren » dau tien, dat tren, dau tieng
duc manh » suc manh, duc anh, duc minh
duc danh » duc anh, duc hanh, duc dan
hai dau » han dau, hai dan, hai hau
tu sach » thu sach, te sach, tu cach
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x hoi. hieu ve cham ((duc danh) OR (duc manh)) thanh hai dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang x hoi. hieu ve cham ((duc danh) or (duc manh)) thanh hai dau tren~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang x hoi. hieu ve cham ((duc danh) or (duc manh)) thanh hai dau tren*.