Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
canh trinh » canh tranh, hanh trinh, canh tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong tac » cong ty
tac chan » tac chuan, tac can, tac chon
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((lieu tinh) or (((chiet tach) OR (chieu sach)))) - canh trinh vat dung cong tac chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu tinh) OR (((chiet tach) OR (chieu sach)))) - canh trinh vat dung cong tac chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((lieu tinh) or (((chiet tach) OR (chieu sach)))) - canh trinh vat dung cong tac chan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((lieu tinh) or (((chiet tach) OR (chieu sach)))) - canh trinh vat dung cong tac chan tu*.