Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
hanh phan » thanh phan, anh phan, hanh nhan
cua nhung » va nhung
hanh han » hanh nhan, hanh san, anh han
cong van » cong vang, cong san, song van
van quan » van ban
quan tai » quan tri, quang tri, quan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) or (chiet tach)) - ((hanh han) OR (hanh phan)) cua nhung cong van quan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chiet tach)) - ((hanh han) OR (hanh phan)) cua nhung cong van quan tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) or (chiet tach)) - ((hanh han) OR (hanh phan)) cua nhung cong van quan tai".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chiet tach)) - ((hanh han) OR (hanh phan)) cua nhung cong van quan tai*.