Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
canh sinh » canh tinh, canh binh, tinh sinh
cong doan » cong dan, cong hoan, dong doanh
doc hieu » toc thieu, hoc thieu, hoc hien
phan cau » phan dau, phan cac, phan tu
phan lap » phan dau
doi chi » doi khi
sinh va » sinh vat, tinh va, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (doi chi)) xanh - canh sinh va nhung cong doan ((phan cau) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) xanh - canh sinh va nhung cong doan ((phan cau) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (doi chi)) xanh - canh sinh va nhung cong doan ((phan cau) or (phan lap))*.