Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
canh sinh » canh tinh, canh binh, tinh sinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) xanh - canh sinh vat dung cong dan ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh sinh vat dung cong dan ((phan lap) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - canh sinh vat dung cong dan ((phan lap) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - canh sinh vat dung cong dan ((phan lap) or (phan dau))*.