Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
chua xang » chua nang, chuc nang, chu bang
dung cong » dung trong
chu manh » ho manh, chu han, chu van
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) or (chu manh)) - hanh ((trinh va) OR (trinh ve)) dung cong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu manh)) - hanh ((trinh va) OR (trinh ve)) dung cong trinh toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu manh)) - hanh ((trinh va) OR (trinh ve)) dung cong trinh toan tap*".