Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
thanh khoa » thanh hoa, thanh pho, hang khoa
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
khoa tap » khoa tai, khoa than, hoc tap

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