Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
canh doanh » chinh doanh, doanh doanh, kinh doanh
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
van tuang » van quang, van thang, van tang
chi xanh » chi anh, chi danh, chi hanh
van tuan » van quan, van ban, anh tuan
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - ((canh doanh) or (hanh doanh)) luan nang cong ((van tuan) or (van tuang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((canh doanh) OR (hanh doanh)) luan nang cong ((van tuan) OR (van tuang)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - ((canh doanh) or (hanh doanh)) luan nang cong ((van tuan) or (van tuang)) cau*.