Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
dung cong » dung trong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau
ho chau » ha chau, ho chu, o chau

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 - canh ((trinh van) OR (trinh han)) dung cong san phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chau tinh - canh ((trinh van) OR (trinh han)) dung cong san phan dau".
• Adding a wildcard symbol may retrieve word variants: ho chau tinh - canh ((trinh van) OR (trinh han)) dung cong san phan dau*.