Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
quang dung » quang trung, ung dung, cuong dung
lieu tinh » trieu tinh, diep tinh, bien tinh
doc lieu » duoc lieu, doc hieu, du lieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » 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: doc lieu tinh - hanh trang ((quang dung) or (su dung)) ((cong dan) OR (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc lieu tinh - hanh trang ((quang dung) OR (su dung)) ((cong dan) OR (cong san)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc lieu tinh - hanh trang ((quang dung) or (su dung)) ((cong dan) OR (cong san)) toan cau".
• Adding a wildcard symbol may retrieve word variants: doc lieu tinh - hanh trang ((quang dung) or (su dung)) ((cong dan) OR (cong san)) toan cau*.