Perhaps you should try some spelling variations:
so doanh » so danh, su doanh, hoa doanh
nang mai » nang ma, nang tai, lang mai
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
cua viet » ca viet, hoa viet, cua vat
ly nang » ky nang, ly hang, ly vang
mai hoi » mai khoi, dai hoi, lai hoi
so sanh » do sanh
cam tuc » cam xuc, cam tu, nam thuc
va tinh » may tinh
van cam » van nam, van lam, van cau
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: ((so doanh) or (so sanh)) ly nang mai hoi. hieu van cam tuc ((van hanh) or (va tinh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so doanh) OR (so sanh)) ly nang mai hoi. hieu van cam tuc ((van hanh) OR (va tinh)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((so doanh) or (so sanh)) ly nang mai hoi. hieu van cam tuc ((van hanh) or (va tinh)) vi cua viet*.