Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
lang cong » dang cong, bang cong, hang cong
hoc dieu » hoc hien
tranh va » tranh van, trang va, trinh va
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc dieu) or (hoc thieu)) manh - canh tranh va lang cong ((dan toan) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc thieu)) manh - canh tranh va lang cong ((dan toan) OR (dan than)) cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc thieu)) manh - canh tranh va lang cong ((dan toan) or (dan than)) cao*.