Perhaps you should try some spelling variations:
thiet tach » thien hach, thuat tach
chiet tach » chieu sach
thong cua » thong quan, thong tu, huong cua
bang cong » dang cong, bang song, hang cong
cong tran » cong tan, cong tuan, cong toan
dung cua » dung luan, dung cho
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) or (chiet tach)) - hanh ((thong cua) or (dung cua)) bang cong tran van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((thiet tach) OR (chiet tach)) - hanh ((thong cua) OR (dung cua)) bang cong tran van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((thiet tach) or (chiet tach)) - hanh ((thong cua) or (dung cua)) bang cong tran van ban*.