Perhaps you should try some spelling variations:
trong manh » trong minh, trong anh, trong mach
chai tinh » chau tinh, cham tinh, nhai tinh
thai tinh » thai binh, thai vinh, thanh tinh
manh toan » thanh toan, anh tuan, tinh toan
trang va » tran van, hang va
toan ban » van ban
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chai tinh) OR (thai tinh)) - canh ((trang va) or (luan van)) dung trong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chai tinh) OR (thai tinh)) - canh ((trang va) OR (luan van)) dung trong manh toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chai tinh) OR (thai tinh)) - canh ((trang va) or (luan van)) dung trong manh toan ban*".