Perhaps you should try some spelling variations:
trinh trong » trinh truong, tranh trong, trinh trung
trong san » trong cac, cong san, dong san
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
san dung » van dung, dan dung, tan dung
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - trinh trong san dung cong tac ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - trinh trong san dung cong tac ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - trinh trong san dung cong tac ((toan cao) or (van ban))*.