Perhaps you should try some spelling variations:
mai khoi » tai khoa, cac khoi, dai khoa
danh vai » danh sai, danh va, doanh van
mai khoa » tai khoa, may khoa, dai khoa
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
vai cuu » vai cua
va danh » va dinh, va dan, va hanh
cam luc » cam xuc, cau luc
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
luc va » duc va, tuc va, loc va

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 khoi) OR (mai khoa)). ((hieu ve) or (hieu va)) cam luc va danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((mai khoi) OR (mai khoa)). ((hieu ve) OR (hieu va)) cam luc va danh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((mai khoi) OR (mai khoa)). ((hieu ve) or (hieu va)) cam luc va danh vai cuu tre*".