Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
canh sinh » canh tinh, canh binh, tinh sinh
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
vat dung » van dung, va dung, viet dung
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (theo chu)) xanh - canh sinh vat dung cong ((dan phan) or (dan chan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chu)) xanh - canh sinh vat dung cong ((dan phan) OR (dan chan)) tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chu)) xanh - canh sinh vat dung cong ((dan phan) or (dan chan)) tap*.