Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, pham duc
te sach » toc sach
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky danh
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky dang) or (ky nang)) xay hoi. hieu ve ((cham xuc) OR (cham soc)) va dan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dang) OR (ky nang)) xay hoi. hieu ve ((cham xuc) OR (cham soc)) va dan vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky dang) or (ky nang)) xay hoi. hieu ve ((cham xuc) OR (cham soc)) va dan vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky dang) or (ky nang)) xay hoi. hieu ve ((cham xuc) OR (cham soc)) va dan vi cua tre*.