Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
trung hoc » trung quoc
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung tam, trung cap
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 hoc)) thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((trung ha) OR (trung hoc)) thong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((trung ha) or (trung hoc)) thong cong dan toan cao*.