Perhaps you should try some spelling variations:
trong thong » trong thuong, thong thong, tong thong
hieu nganh » vien nganh, hiem ngan, hieu manh
chiet tach » chieu sach
quan trong » gian trong
manh toan » thanh toan, anh tuan, tinh toan
hanh ban » thanh ban, hang ban, hanh san
ban quan » van quan
san toan » van toan, dan toan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu nganh) or (chiet tach)) - hanh ban quan trong thong ((san toan) OR (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu nganh) OR (chiet tach)) - hanh ban quan trong thong ((san toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu nganh) or (chiet tach)) - hanh ban quan trong thong ((san toan) OR (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu nganh) or (chiet tach)) - hanh ban quan trong thong ((san toan) OR (manh toan)) cau*.