Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » hieu nganh, dieu hanh, hieu van
hien hanh » dieu hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
cong tang » cong thang, cong tan, cong lang
tinh cua » trinh cua, sinh cua, tinh chat
tang van » dang van, hoang van, trong 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 ((((hieu manh) OR (hien hanh))) or (chieu xanh)) - hanh tinh cua nhung cong tang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (hien hanh))) OR (chieu xanh)) - hanh tinh cua nhung cong tang van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hieu manh) OR (hien hanh))) or (chieu xanh)) - hanh tinh cua nhung cong tang van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) OR (hien hanh))) or (chieu xanh)) - hanh tinh cua nhung cong tang van ban*.