Perhaps you should try some spelling variations:
thien danh » thien anh, thien thanh, thien chanh
thien dang » thien bang, thien nang, thien cong
nang cong » nang song, dang cong, bang cong
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh
cong va » dong va, cong ha, cong tac
va nang » van nang, da nang, cam nang

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 (thien dang)) - thanh cong va nang cong ((dan toan) or (van toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (thien dang)) - thanh cong va nang cong ((dan toan) OR (van toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien danh) OR (thien dang)) - thanh cong va nang cong ((dan toan) or (van toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) OR (thien dang)) - thanh cong va nang cong ((dan toan) or (van toan)) ban*.