Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hieu nganh » vien nganh, hiem ngan, hieu manh
nong cong » cong cong, tong cong, nang cong
cong van » cong vang, cong san, song van
phan cau » phan dau, phan cac, phan lap
cong cu » chung cu
cu nong » cuu nong, cua nong, tu nong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu nganh)) - thanh cong cu nong cong van ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu nganh)) - thanh cong cu nong cong van ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu nganh)) - thanh cong cu nong cong van ((phan cau) or (phan tu))*.