Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, bien tinh
trinh vat » trinh van, trinh luat, sinh vat
vat nhung » va nhung, vap nhung, vai nhung
tac chuan » tac quan, tac cua, tac can
cong tac » cong ty
chuan tu » chua tu, chuan muc, chuan ted

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