Perhaps you should try some spelling variations:
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
chi tinh » chai tinh, chi minh, chi binh
tran van » luan van
van dung » van dong, xay dung, tin dung
cong san » cong tac
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi tinh - hanh tran van dung cong san ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi tinh - hanh tran van dung cong san ((toan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi chi tinh - hanh tran van dung cong san ((toan tai) or (toan tap))*.