Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
luyen tap » tuyen tap, luyen thi
thi nhung » thi nang, thi hong, thi huong
dong vat » dong va, dong von, dong ha
cac che » cac he, cac chien, cac chat
ban vat » bang vat, ban va, van vat
ca chu » cua chu, ca chua, cac chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: luyen tap ((ca chu) or (cac che)) đe co ((((ban vat) or (ben vat))) or (dong vat)) _ thi nhung cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: luyen tap ((ca chu) OR (cac che)) đe co ((((ban vat) OR (ben vat))) OR (dong vat)) _ thi nhung cong.
• Adding a wildcard symbol may retrieve word variants: luyen tap ((ca chu) or (cac che)) đe co ((((ban vat) or (ben vat))) or (dong vat)) _ thi nhung cong*.