Perhaps you should try some spelling variations:
canh trang » canh tranh, hanh trang, banh trang
thong cong » trong cong, tong cong, thong thong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dang cong » dung cong
trang va » tran van, hang va
tan toan » tan tran, tap toan, van 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 tieu tinh - canh trang va ((thong cong) or (dang cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - canh trang va ((thong cong) OR (dang cong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - canh trang va ((thong cong) or (dang cong)) tan toan cau*.