Perhaps you should try some spelling variations:
sang mai » sang ma, sang tai, lang mai
ky sang » ky nang, ky dang, ky tang
mai hoi » mai khoi, dai hoi, lai hoi
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
tai cuu » tai buu, tai cua, thai cua
ve cac » va cac, vien cac

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

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