Perhaps you should try some spelling variations:
chieu tinh » chau tinh, kieu tinh, che tinh
lieu tinh » diep tinh, bien tinh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dung cong » dung trong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban
dinh va » dinh van, dinh ve, tinh va
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 ((chieu tinh) or (((lieu tinh) OR (trieu tinh)))) - hanh dinh va dung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (((lieu tinh) OR (trieu tinh)))) - hanh dinh va dung cong van toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) or (((lieu tinh) OR (trieu tinh)))) - hanh dinh va dung cong van toan ban*".