Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
danh doi » danh di, thanh doi, dung doi
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
mai hoi » dai hoi, lai hoi, mai doi
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
xa danh » va danh, dia danh, nam danh
doi cua » dai cua, hoi cua
ve cac » va cac, vien cac
cua te » cua tu

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 nang ((mai hoi) OR (mai khoi)). hieu ve cac tuc xa danh doi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((mai hoi) OR (mai khoi)). hieu ve cac tuc xa danh doi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((mai hoi) OR (mai khoi)). hieu ve cac tuc xa danh doi cua te*.