Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
van thong » van thuong, van phong, va thong
anh dung » anh dong, anh huong, sach dung
dung van » duong van, dung va, dang van
thong va » trong va, thong cua, truong va
tan ban » toan ban, tang ban, van ban
va tan » van tan, va toan, va than

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu manh) or (thien danh)) - anh dung van thong thong va tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu manh) OR (thien danh)) - anh dung van thong thong va tan ban*.