Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh choa » trinh hoa, trinh khoa, trinh chuan
doi chieu » doc hieu, doi chi, ho chieu
trinh cho » trinh chao, trinh co, trinh chat
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
dan thai » dang thai, dan thi, dan than
thai cao » tai cao, thoai cac, thuat cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - hanh ((trinh choa) or (trinh cho)) dang cong dan thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh ((trinh choa) OR (trinh cho)) dang cong dan thai cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh ((trinh choa) or (trinh cho)) dang cong dan thai cao*.