Perhaps you should try some spelling variations:
dong thanh » truong thanh
chau tinh » cuu tinh, ha tinh, cua tinh
hung dong » huong dong, vung dong, dung dong
toan van » tran van, tan van, toan va
van hung » van dung, manh hung, van duong
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chau tinh) or (trieu tinh)) - tinh toan van hung dong thanh ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (trieu tinh)) - tinh toan van hung dong thanh ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (trieu tinh)) - tinh toan van hung dong thanh ((toan tai) or (toan ban))*.