Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
pha nhung » phai nhuong, tham nhung, phan chung
ha nhung » hoa nhung, hay nhung, va nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap

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 - thanh trung ((ha nhung) or (pha nhung)) ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh trung ((ha nhung) OR (pha nhung)) ((cong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung ((ha nhung) or (pha nhung)) ((cong dan) or (cong san)) toan cao*.