Perhaps you should try some spelling variations:
sang mai » sang ma, sang tai, lang mai
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
cua su » qua su
ca su » cao su, ca sau, va su

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

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