Perhaps you should try some spelling variations:
van chat » cao chat
hang tai » hang va, dung tai
han tai » nhan tai, van tai, toan tai
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cao » va cac, va co, va dao
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x hoi. hieu ((va cao) or (van chat)) thuc vat ((han tai) OR (hang tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. hieu ((va cao) OR (van chat)) thuc vat ((han tai) OR (hang tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x hoi. hieu ((va cao) or (van chat)) thuc vat ((han tai) OR (hang tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. hieu ((va cao) or (van chat)) thuc vat ((han tai) OR (hang tai)) cua tre*.