Perhaps you should try some spelling variations:
nhuong tuong » thuong truong, thuong luong, chuong duong
nhung tuong » nhung huong, nhung phuong, hung vuong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh van » tran van, trinh van, thanh van
cua cau » cua cac, cua chu, cua cay
ca cau » cac cau, can cau, ca cac

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 - canh tranh van ((nhuong tuong) OR (nhung tuong)) dan ((ca cau) or (cua cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh van ((nhuong tuong) OR (nhung tuong)) dan ((ca cau) OR (cua cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh van ((nhuong tuong) OR (nhung tuong)) dan ((ca cau) or (cua cau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh van ((nhuong tuong) OR (nhung tuong)) dan ((ca cau) or (cua cau))*.