Perhaps you should try some spelling variations:
cong thinh » cong trinh, cong thanh, cong tinh
doi chieu » doc hieu, doi chi, mot chieu
binh sinh » binh dinh, tinh sinh, binh minh
sinh thuc » trinh thuc, sinh hoc, sinh thai
thinh dan » thinh doan, trinh dan, hinh dan
thuc dan » thuc hanh, hoc dan, thuc vat
dan cong » dang cong, van cong, dan dong

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 - binh sinh thuc dan cong thinh dan ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (toc thieu)) sang - binh sinh thuc dan cong thinh dan ca*".