Perhaps you should try some spelling variations:
trinh quang » tinh quang, trinh quan, tranh quang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
tan toan » tan tran, tap toan, van toan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - hanh trinh quang ((nhung cong) OR (thong cong)) ((tan toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh trinh quang ((nhung cong) OR (thong cong)) ((tan toan) OR (van tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - hanh trinh quang ((nhung cong) OR (thong cong)) ((tan toan) or (van tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh trinh quang ((nhung cong) OR (thong cong)) ((tan toan) or (van tuan)) cau*.