Perhaps you should try some spelling variations:
trong doanh » trong nganh
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
mang cua » dung cua, ban cua, cong cua
manh cua » doanh cua, ban cua
phan dau » phan tu
hang dau » hang va, hang tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - cach ((mang cua) OR (manh cua)) dung trong doanh ((phan dau) OR (hang dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - cach ((mang cua) or (manh cua)) dung trong doanh ((phan dau) OR (hang dau))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - cach ((mang cua) or (manh cua)) dung trong doanh ((phan dau) OR (hang dau))*.