Perhaps you should try some spelling variations:
thien nang » thien bang, thien dang, trien nang
ton thien » hoan thien, toan thiet, doan thien
dung cong » dung trong
than van » thanh van, tran van, phan van
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
than va » thanh va, nhan va, toan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ton thien nang - canh ((than va) or (than van)) dung cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ton thien nang - canh ((than va) OR (than van)) dung cong van toan cao*.