Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trang va » hang va
tran van » luan van
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cac » nhan cach, phan dau, phan lap
ho lieu » so lieu, co lieu, ho kieu

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 - canh ((trang va) or (tran van)) nhung cong san phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - canh ((trang va) OR (tran van)) nhung cong san phan cac.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - canh ((trang va) or (tran van)) nhung cong san phan cac*.