Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
thanh tung » thanh cong
hoc trien » hoc tren, hoc tien, hoc truyen
cong tac » cong ty
toan ban » van ban
va bang » va nang, va ban, va hang
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trien quang - thanh tung ((va bang) or (va lang)) cong tac ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trien quang - thanh tung ((va bang) OR (va lang)) cong tac ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc trien quang - thanh tung ((va bang) or (va lang)) cong tac ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc trien quang - thanh tung ((va bang) or (va lang)) cong tac ((toan tap) OR (toan ban))*.