Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
hanh di » hanh vi, hanh de, hang di
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua
ve cao » va cao, ve bao, ve co
sac ky » cac ky, sai ky
cua te » cua tu

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: thu ((sach y) OR (sac ky)) nang mai hoi. hieu ((ve cao) OR (ve cac)) duc va hanh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach y) or (sac ky)) nang mai hoi. hieu ((ve cao) OR (ve cac)) duc va hanh di cua te~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach y) or (sac ky)) nang mai hoi. hieu ((ve cao) OR (ve cac)) duc va hanh di cua te*.