Perhaps you should try some spelling variations:
toc trieu » toc thieu, hoc thieu, tan trieu
canh tran » canh tranh, hanh trang, banh trang
dung cong » dung trong
hoc tieu » hoc thieu, hoc dieu, hoc sieu
tran van » luan van
van dung » van dong, xay dung, tin dung
dan chan » dan gian, 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: ((toc trieu) or (hoc tieu)) tinh - canh tran van dung cong ((dan chan) OR (dan ca)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc trieu) OR (hoc tieu)) tinh - canh tran van dung cong ((dan chan) OR (dan ca)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc trieu) or (hoc tieu)) tinh - canh tran van dung cong ((dan chan) OR (dan ca)) cau".
• Adding a wildcard symbol may retrieve word variants: ((toc trieu) or (hoc tieu)) tinh - canh tran van dung cong ((dan chan) OR (dan ca)) cau*.