Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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 ((tran van) OR (hang va)) nhung cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((tran van) OR (hang va)) nhung cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((tran van) OR (hang va)) nhung cong san toan cao*.