Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh thanh » nhanh thanh, thanh thanh, khanh thanh
thanh phan » thanh pho, thanh san, thanh toan
toc chieu » toc thieu, doc hieu, hoc thieu
phan dung » phan ung, phan dang, chan dung
dung cong » dung trong
kham phan » phap phan, dam phan, khai pha

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu tinh - hanh thanh phan dung cong ((kham phan) or (kham pha)) bi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu tinh - hanh thanh phan dung cong ((kham phan) OR (kham pha)) bi*.