Perhaps you should try some spelling variations:
kho tang » cao tang
ban hanh » ban hang
ky tang » ky nang, ky dang, ky trong
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
cham so » cham soc, cham o, ham so
cua tre » cuu tre, cua triet, dua tren
so ban » sao ban, so bang, co ban
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 cac ((ky tang) or (kho tang)) ma hoa. hieu vu cham so ban hanh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky tang) OR (kho tang)) ma hoa. hieu vu cham so ban hanh vi ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ((ky tang) or (kho tang)) ma hoa. hieu vu cham so ban hanh vi ((cua tre) OR (cua te))*".