Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
thanh tung » thanh cong
tuan phung » tuan hung, tuan phong, tran phuong
phung cong » nhung cong, phong cong, nhung chong
ho thiet » hoc thiet, hoa thiet, so thiet
cong tan » cong tac, cong san, cong thanh
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thiet tach - ((thanh trung) OR (thanh tung)) tuan phung cong tan tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho thiet tach - ((thanh trung) OR (thanh tung)) tuan phung cong tan tran van".
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - ((thanh trung) OR (thanh tung)) tuan phung cong tan tran van*.