Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
ho chieu » theo chieu, doi chieu, mot chieu
manh cua » doanh cua, ban cua
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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 (hoc thieu)) xanh - canh manh cua ((hang cong) OR (dang cong)) dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - canh manh cua ((hang cong) OR (dang cong)) dan chan tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - canh manh cua ((hang cong) OR (dang cong)) dan chan tu*".