Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
canh trong » anh trong, hanh trong, lanh trong
cong trong » cong thuong, duong trong, cong trinh
ung trong » dung trong, cung trong, vung trong
phan ung » phan xuong, phan cong
trong ca » trong cac, trong nha
ca phan » cac phan, cao phan, cap phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu tinh - ((canh trong) or (cong trong)) phan ung trong ca phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu tinh - ((canh trong) OR (cong trong)) phan ung trong ca phan tu*.