Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
quang dung » quang trung, ung dung, cuong dung
trong manh » trong minh, trong anh, trong mach
lieu tinh » trieu tinh, bien tinh
manh toan » thanh toan, anh tuan, tinh toan
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 ((lieu tinh) OR (diep tinh)) - ((hanh tranh) or (hanh trinh)) quang dung trong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (diep tinh)) - ((hanh tranh) OR (hanh trinh)) quang dung trong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((lieu tinh) OR (diep tinh)) - ((hanh tranh) or (hanh trinh)) quang dung trong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) OR (diep tinh)) - ((hanh tranh) or (hanh trinh)) quang dung trong manh toan cau*.