Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tinh » thanh binh, nhanh tinh, than kinh
thong cong » trong cong, tong cong, thong thong
cong trong » cong thuong, duong trong, cong trinh
hieu manh » hieu nganh, dieu hanh, hieu van
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
trong van » trong cac
tinh cua » trinh cua, sinh cua, tinh chat

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