Perhaps you should try some spelling variations:
thanh trung » thanh tung
chua xang » chua nang, chuc nang, chu bang
dung cong » dung trong
trung va » truong va, trang va, trung ha
cong van » cong vang, cong san, song van
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
chu van » cuu van, chu han
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) or (chu van)) - thanh trung va dung cong van ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu van)) - thanh trung va dung cong van ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu van)) - thanh trung va dung cong van ((toan tai) or (toan ban))*.