Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
truong va » truong dai, truong cao, truong dao
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tuong va » thuong va, luong va, duong va
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - thanh ((dung va) or (((tuong va) OR (truong va)))) trong cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - thanh ((dung va) OR (((tuong va) OR (truong va)))) trong cong manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - thanh ((dung va) or (((tuong va) OR (truong va)))) trong cong manh toan tap".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - thanh ((dung va) or (((tuong va) OR (truong va)))) trong cong manh toan tap*.