Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh quan » trinh luat, trinh han
cong cong » cong dong, trong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
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 - hanh ((trinh quan) OR (tinh quang)) cong cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((trinh quan) OR (tinh quang)) cong cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((trinh quan) OR (tinh quang)) cong cong san toan ban*.