Perhaps you should try some spelling variations:
quan trong » gian trong
hanh tong » hanh trong, han tong, hanh dong
tong quan » thong quan, tong luan, luong quan
ho chieu » theo chieu, hoc thieu, doi chieu
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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 quan trong cong van tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc hien)) sach - hanh tong quan trong cong van tan tap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc hien)) sach - hanh tong quan trong cong van tan tap*.