Perhaps you should try some spelling variations:
chua xang » chua nang, chuc nang, chu bang
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
chu nang » chuc nang, chua nang, cuu nang
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: theo ((chua xang) or (chu nang)) - hanh tang luan ((hang cong) OR (dang cong)) tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu nang)) - hanh tang luan ((hang cong) OR (dang cong)) tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu nang)) - hanh tang luan ((hang cong) OR (dang cong)) tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu nang)) - hanh tang luan ((hang cong) OR (dang cong)) tinh toan cau*.