Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung trong » hung trong, nhung tuong, thuong trong
doi chieu » doi chi, ho chieu, mot chieu
cua nhung » va nhung
trong van » trong cac
doc hieu » toc thieu, hoc thieu, hoc hien
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doc hieu)) tinh - ((thanh trung) or (canh tranh)) cua nhung trong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) tinh - ((thanh trung) OR (canh tranh)) cua nhung trong van van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) tinh - ((thanh trung) or (canh tranh)) cua nhung trong van van ban".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) tinh - ((thanh trung) or (canh tranh)) cua nhung trong van van ban*.