Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong vang » cong lang, cong quang, cong ngang
song van » hoang van, trong van, duong van
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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 cua nhung ((song van) or (cong vang)) ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua nhung ((song van) OR (cong vang)) ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua nhung ((song van) or (cong vang)) ((phan cau) or (phan cac))*.