Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
manh cua » doanh cua, ban cua
manh van » anh van, menh van, canh van

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)) tinh - canh manh cua ((tong cong) or (dung cong)) manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - canh manh cua ((tong cong) OR (dung cong)) manh van ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - canh manh cua ((tong cong) or (dung cong)) manh van ban*.