Perhaps you should try some spelling variations:
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
tuong cua » truong cua, huong cua, thong cua
dung cong » dung trong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
tung cua » trung cua, dung cua, tang cua
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (hien hanh)) - thanh ((tung cua) OR (tuong cua)) dung cong doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - thanh ((tung cua) OR (tuong cua)) dung cong doan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien hanh)) - thanh ((tung cua) OR (tuong cua)) dung cong doan phan dau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - thanh ((tung cua) OR (tuong cua)) dung cong doan phan dau*.