Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
xuyen tac » xuyen tai, nguyen tac, thuyen tac
thi cong » tai cong, thien cong
cac che » cac chien, cac chat, sach che
ca chu » cua chu, ca chua, cac chu
y thi » ky thi, y thai, ly thi
va y » va ky, va my, vat y

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

• Performing a fuzzy search may retrieve terms with similar spellings: xuyen tac ((ca chu) or (((cac che) or (cac he)))) đe co ban va y thi cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: xuyen tac ((ca chu) OR (((cac che) OR (cac he)))) đe co ban va y thi cong cong.
• Adding a wildcard symbol may retrieve word variants: xuyen tac ((ca chu) or (((cac che) or (cac he)))) đe co ban va y thi cong cong*.