Perhaps you should try some spelling variations:
trinh san » trinh han, trinh quan, trinh toan
tan quang » tran quang, tang quang, than quang
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh

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 - trinh san ((cua dung) OR (qua dung)) cong tan quang nam~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - trinh san ((cua dung) OR (qua dung)) cong tan quang nam".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - trinh san ((cua dung) OR (qua dung)) cong tan quang nam*.