Perhaps you should try some spelling variations:
duong trong » dung trong
thien danh » thien anh, thien dang, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
van duong » van dong, van dung, van phong
anh dung » anh dong, anh huong, sach dung
dung van » duong van, dung va, dang van
trong ca » trong cac, trong nha
ca van » cac van, cao van, can van

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 duong trong ca van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu manh) OR (thien danh)) - anh dung van duong trong ca van ban*.