Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
thu sach » tu sach, thuat sach, thuoc sach
mang mai » mang may, lang mai, mang lai
tu cach » tu cac
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky mang » ky nang, ke mang, ky dang
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, duc va
ve su » va su
kien* » bien*, vien*, tien*

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky mang mai hoi. hieu ve cam ((tuc va) OR (tuc xa)) thanh ve su kien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky mang mai hoi. hieu ve cam ((tuc va) OR (tuc xa)) thanh ve su kien*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ky mang mai hoi. hieu ve cam ((tuc va) OR (tuc xa)) thanh ve su kien*".