Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
chu xanh » chu manh, chieu xanh, chua xang
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (lieu tinh)) - ((hanh tang) or (canh tranh)) va dung cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (lieu tinh)) - ((hanh tang) OR (canh tranh)) va dung cong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (lieu tinh)) - ((hanh tang) or (canh tranh)) va dung cong tinh toan cau*.