Perhaps you should try some spelling variations:
thu sang » thu hang, thu san, thu bang
hoc ngoc » hoc nuoc, ho ngoc, loc ngoc
sang ky » sang kyo, dang ky, tang ky
dan vai » dan tai, dan vat, den vai
cua tre » cua te, cuu tre, cua triet
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
dan va » doan va, dan ca, ban va
va xa » va xac, va xay, va xu
ky va » ly va, ke va, my va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sang ky va xa hoi. hieu ve ((cac xuc) or (hoc ngoc)) va ((dan vai) OR (dan va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sang ky va xa hoi. hieu ve ((cac xuc) OR (hoc ngoc)) va ((dan vai) OR (dan va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sang ky va xa hoi. hieu ve ((cac xuc) or (hoc ngoc)) va ((dan vai) OR (dan va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sang ky va xa hoi. hieu ve ((cac xuc) or (hoc ngoc)) va ((dan vai) OR (dan va)) cua tre*.