Perhaps you should try some spelling variations:
so doanh » so danh, su doanh, hoa doanh
hieu van » hieu va, thien van, lieu va
cau treo » cau tren, cau triet, cau trieu
dung hai » dung tai, dung ha, dung sai
doanh ly » doanh va, dinh ly, doanh _
cam truc » cau truc, nam truc, lam truoc
cau theo » cau thi, cau tao
van cam » van nam, van lam, van cau
truc va » thuc va, thuc vat, trung va
va dung » van dung, va duong, vat dung
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, xa hoi, ma hoa

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 ly nang ma hoi. hieu van cam truc va dung hai ((cau treo) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so doanh ly nang ma hoi. hieu van cam truc va dung hai ((cau treo) OR (cau theo)).
• Adding a wildcard symbol may retrieve word variants: so doanh ly nang ma hoi. hieu van cam truc va dung hai ((cau treo) or (cau theo))*.