Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh trong » hanh trong, lanh trong, sanh trong
doi chieu » doc hieu, doi chi, mot chieu
anh trong » anh thuong, dinh trong, lang trong
phat dung » hat dung, pham dung, phan dung
trong van » trong cac
van phan » van phong, van thanh, luan phan
phan dau » phan tu, hang dau

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 - ((canh trong) or (anh trong)) phat dung trong van phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - ((canh trong) OR (anh trong)) phat dung trong van phan dau*.