Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung tam, tran tuan, truong thanh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
hach toan » thanh toan, manh toan
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan ban, toan 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 sach - hanh ((trung tuan) or (trung thanh)) ((hang cong) OR (bang cong)) hach toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trung tuan) OR (trung thanh)) ((hang cong) OR (bang cong)) hach toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trung tuan) or (trung thanh)) ((hang cong) OR (bang cong)) hach toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trung tuan) or (trung thanh)) ((hang cong) OR (bang cong)) hach toan cao*.