Perhaps you should try some spelling variations:
thuong phuong » truong phuong, thong phuong, thong thuong
thuong hung » thuong dung, truong chung, thuong luong
hanh trinh » canh tranh, hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh vat » trinh van, trinh luat, sinh vat
doi lieu » duoc lieu, doi chieu, du lieu
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - hanh trinh vat ((thuong hung) OR (thuong phuong)) ((van toan) OR (van tuan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi lieu tinh - hanh trinh vat ((thuong hung) OR (thuong phuong)) ((van toan) or (van tuan)) tap~".
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - hanh trinh vat ((thuong hung) OR (thuong phuong)) ((van toan) or (van tuan)) tap*.