Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
thuc cong » thuoc cong, thu cong, chuc cong
bang vat » bang va, dang vat, cang vat
cac thu » cach thuc, cac thoi
cac che » cac he, cac chien, cac chat
ban vat » ben vat, ban va, van vat
y thuc » ty thuc, y thuoc, _ thuc
tuyen » truyen, quyen

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap ((cac thu) or (cac che)) đe co ((ban vat) OR (bang vat)) y thuc cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap ((cac thu) OR (cac che)) đe co ((ban vat) OR (bang vat)) y thuc cong cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tap ((cac thu) or (cac che)) đe co ((ban vat) OR (bang vat)) y thuc cong cong".
• Adding a wildcard symbol may retrieve word variants: tuyen tap ((cac thu) or (cac che)) đe co ((ban vat) OR (bang vat)) y thuc cong cong*.