Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hanh tramg » hanh trang, thanh trang, hanh trong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tram » hanh tam, hanh trang, thanh tran
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
van dung » van dong, xay dung, tin dung
vang van » dang van, tang van, lang 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 ((thien danh) or (hieu manh)) - ((hanh tram) or (hanh tramg)) van dung cong vang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (hieu manh)) - ((hanh tram) OR (hanh tramg)) van dung cong vang van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (hieu manh)) - ((hanh tram) or (hanh tramg)) van dung cong vang van ban*.