Perhaps you should try some spelling variations:
tranh trong » tran trong, trinh trong, anh trong
hieu nganh » vien nganh, hiem ngan, hieu manh
chiet tach » chieu sach
dung cong » dung trong
trong su » trong san, trong thu, trong qua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu nganh) or (chiet tach)) - tranh trong su dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu nganh) OR (chiet tach)) - tranh trong su dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu nganh) or (chiet tach)) - tranh trong su dung cong tan toan ban*.