Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh van » trinh han, trinh quan, trinh toan
cong vang » cong lang, cong quang, cong ngang
theo chu » theo chieu, cho chu, chao chu
chu manh » ho manh, chu han, chu van
trinh va » trinh vat, trinh ve, trinh vi
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu manh - canh ((trinh va) or (trinh van)) nhung cong vang ((phan cac) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu manh - canh ((trinh va) OR (trinh van)) nhung cong vang ((phan cac) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu manh - canh ((trinh va) or (trinh van)) nhung cong vang ((phan cac) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: theo chu manh - canh ((trinh va) or (trinh van)) nhung cong vang ((phan cac) OR (phan dau))*.