Perhaps you should try some spelling variations:
dang mai » dang hai, dang mau, dang bai
mai khoi » mai khoa, tai khoa, cac khoi
phat cuc » phat cua, pham cuc, nhat cua
ban hanh » ban hang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
cuc ban » cua ban, cac ban, cuu ban
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, tu can
vi cua » vai cua, di cua

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) OR (tu san)) ky dang mai khoi. hieu va phat cuc ban hanh ((vi cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky dang mai khoi. hieu va phat cuc ban hanh ((vi cua) OR (dai cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky dang mai khoi. hieu va phat cuc ban hanh ((vi cua) or (dai cua)) te*".