Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cong thanh » dong thanh, cong trinh, cong tan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
toan cao » toan ban, toan tap
tang ha » tang ma, trung ha, tang van
lang ha » long ha

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 ((tang ha) OR (lang ha)) trong cong thanh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - hanh ((tang ha) OR (lang ha)) trong cong thanh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh ((tang ha) OR (lang ha)) trong cong thanh toan cao*.