Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
cong san » cong tac
toan tap » toan 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 va) OR (trinh ve)) nhung cong san ((toan tap) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((trinh va) OR (trinh ve)) nhung cong san ((toan tap) OR (van ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((trinh va) OR (trinh ve)) nhung cong san ((toan tap) or (van ban))*".