Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
song cua » cong cua, dong cua, huong cua
xuc van » duc van, luc van, xuc ban
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
lai va » loai va, mai va, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((song xa) or (song cua)) hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((song xa) OR (song cua)) hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((song xa) or (song cua)) hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai va triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((song xa) or (song cua)) hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai va triet*.