Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
quoc ban » quoc bao, quoc lan, quoc quan
ky lang » ky dang, ky tang, tay lang
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
xuc ban » duc ban, cuc ban, xuat ban
tu can » tu ban, tu cac, thu canh
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ((ky lang) or (ky nang)) mai khoi. hieu va chat ((xuc ban) or (quoc ban)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ((ky lang) OR (ky nang)) mai khoi. hieu va chat ((xuc ban) OR (quoc ban)) hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu can ((ky lang) or (ky nang)) mai khoi. hieu va chat ((xuc ban) or (quoc ban)) hanh vi cua tu*.