Perhaps you should try some spelling variations:
kham soc » cham soc, kham cuoc, ham so
ban hang » ngan hang
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
va danh » va dinh, va dan, va hanh
cuu tre » cua tre, cau tren, cau treo
tu cam » tu cham, tu cac, tu nam
cam ky » cao ky, cac ky
di cuu » di cau, di cua, dinh cuu
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cam ky nang ((x hoi) or (x ho)). hieu vu kham soc ((ban hang) or (va danh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cam ky nang ((x hoi) OR (x ho)). hieu vu kham soc ((ban hang) OR (va danh)) di cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang ((x hoi) or (x ho)). hieu vu kham soc ((ban hang) or (va danh)) di cuu tre*.