Perhaps you should try some spelling variations:
canh trang » canh tranh, hanh trang, banh trang
dieu tinh » diep tinh, lieu tinh, dien tinh
dung cong » dung trong
doan phan » doanh phan, toan phan, dan phan
hoc dieu » hoc thieu, hoc hien
trang va » tran van, hang va
dan chan » dan gian, dan ca, van chat
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu tinh - canh trang va dung cong ((doan phan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - canh trang va dung cong ((doan phan) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc dieu tinh - canh trang va dung cong ((doan phan) or (dan chan)) cau*.