Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
thang long » thanh cong
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
do van » dao van, vo van, so 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) or (hien hanh)) - hanh trung cua ((thang long) or (dung cong)) do van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - hanh trung cua ((thang long) OR (dung cong)) do van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh trung cua ((thang long) or (dung cong)) do van ban*.