Perhaps you should try some spelling variations:
trong tac » trong cac, tuong tac, trong tan
ho chieu » theo chieu, hoc thieu, doi chieu
thi hieu » thi chieu, thi hien, thi dieu
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
tac chan » tac chuan, tac can, tac chon
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (thi hieu)) sang - canh tranh ((cua dung) OR (cua dang)) trong tac chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi hieu)) sang - canh tranh ((cua dung) OR (cua dang)) trong tac chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (thi hieu)) sang - canh tranh ((cua dung) OR (cua dang)) trong tac chan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi hieu)) sang - canh tranh ((cua dung) OR (cua dang)) trong tac chan cau*.