Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
hai qua » hai quan, hai cua, mai qua
hoi qua » hoi cua, hoa qua, hai quan
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - hanh ((hai qua) OR (hoi qua)) dung cong san van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((hai qua) OR (hoi qua)) dung cong san van ban*".