Perhaps you should try some spelling variations:
ky dang » ky nang
ky danh » ky anh
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
xuc ban » cuc ban, quoc ban, xuat ban
duc ban » duc tan, duc van, dua ban
tu sac » tu sach, tu cac, tu san
vi cua » vai cua, di cua
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: tu sac ((ky dang) or (ky danh)) mai hoi. hieu va phat ((xuc ban) OR (duc ban)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky dang) OR (ky danh)) mai hoi. hieu va phat ((xuc ban) OR (duc ban)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky dang) or (ky danh)) mai hoi. hieu va phat ((xuc ban) OR (duc ban)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky dang) or (ky danh)) mai hoi. hieu va phat ((xuc ban) OR (duc ban)) hanh vi cua te*.