Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung hat » trung nhat, trung phat, trung hai
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung hoc, trung tam, trung cap
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 tinh - hanh ((trung ha) or (trung hat)) nhung ((cong dan) OR (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((trung ha) OR (trung hat)) nhung ((cong dan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((trung ha) or (trung hat)) nhung ((cong dan) OR (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((trung ha) or (trung hat)) nhung ((cong dan) OR (cong san)) toan cao*.