Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac
ha tinh » va tinh, may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: pho ha tinh - hanh ((trinh va) OR (trinh van)) nhung cong san than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pho ha tinh - hanh ((trinh va) OR (trinh van)) nhung cong san than cap".
• Adding a wildcard symbol may retrieve word variants: pho ha tinh - hanh ((trinh va) OR (trinh van)) nhung cong san than cap*.