Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
duong cong » dung cong, luong cong, duong trong
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh ve, trinh vi
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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 tinh - canh ((trinh va) OR (trinh vat)) duong cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - canh ((trinh va) OR (trinh vat)) duong cong san toan ban*".