Perhaps you should try some spelling variations:
hanh trong » hanh trang, anh trong, hinh trong
quan trong » gian trong
hanh tong » han tong, hanh dong, hanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc hien)) sach - ((hanh tong) OR (hanh trong)) quan trong cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc hien)) sach - ((hanh tong) OR (hanh trong)) quan trong cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc hien)) sach - ((hanh tong) OR (hanh trong)) quan trong cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc hien)) sach - ((hanh tong) OR (hanh trong)) quan trong cong dan toan tap*.