Perhaps you should try some spelling variations:
thanh tung » thanh cong
dong thanh » truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong danh » cuong danh, cong dan, cong thanh
hoc hieu » hoc thieu, hoc hien, doc hieu
tung cua » trung cua, tuong cua, dung cua
cua nong » cua cong, cuu nong, cua dong
toan cao » toan tap
toan ban » van ban

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 - thanh tung cua nong ((dong thanh) or (cong danh)) ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung cua nong ((dong thanh) OR (cong danh)) ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung cua nong ((dong thanh) or (cong danh)) ((toan cao) or (toan ban))*.