Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
danh dau » lanh dao, hang dau, xang dau
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
danh tu » anh tu, doanh thu
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky tang xa hoi. hieu va cam ((tuc va) or (duc va)) ((danh dau) or (danh tu)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky tang xa hoi. hieu va cam ((tuc va) OR (duc va)) ((danh dau) OR (danh tu)) cau tren.
• Adding a wildcard symbol may retrieve word variants: vu sac ky tang xa hoi. hieu va cam ((tuc va) or (duc va)) ((danh dau) or (danh tu)) cau tren*.