Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » trinh luat, trinh quan, trinh luan
cong manh » cong danh, duong manh, cong thanh
tinh cua » sinh cua, tinh chat, tranh cua
manh van » anh van, menh van, canh van

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 - hanh ((trinh cua) or (tinh cua)) nhung cong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((trinh cua) OR (tinh cua)) nhung cong manh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((trinh cua) or (tinh cua)) nhung cong manh van ban*.