Perhaps you should try some spelling variations:
thanh tang » thanh thang, thanh trang, thanh tung
phan kien » van kien
he trong » he thong, he trung, le trong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
tang he » tang le, tang ha, bang he

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nghe hieu) or (phan kien)) lang - thanh tang he trong cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nghe hieu) OR (phan kien)) lang - thanh tang he trong cong van toan cao.
• Adding a wildcard symbol may retrieve word variants: ((nghe hieu) or (phan kien)) lang - thanh tang he trong cong van toan cao*.