Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
cong chat » cong nhat, cong cua, cong ha
thuc dan » thuc hanh, hoc dan, thuc vat
dan cong » dang cong, van cong, dan dong
chat dan » chat ban, chat ran, hat dan
tinh da » tinh va, tinh gia, tinh lao
da thuc » dan thuc, dai thuc, dam thuc

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) or (toc thieu)) sang - tinh da thuc dan cong chat dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - tinh da thuc dan cong chat dan ca*.