Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, chau tinh, kieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
hach toan » thanh toan, manh toan
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) OR (lieu tinh)) - hanh tran van nhung cong ((hach toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (lieu tinh)) - hanh tran van nhung cong ((hach toan) OR (tinh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) OR (lieu tinh)) - hanh tran van nhung cong ((hach toan) or (tinh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) OR (lieu tinh)) - hanh tran van nhung cong ((hach toan) or (tinh toan)) cau*.