Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
chat tuc » chat xuc, luat tuc, chat huu
van chat » cao chat
xay hoi » xa hoi, tay hoi, cay phoi
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
ky dang » ky nang, ky danh
thi dua » thi dung
dua tre » dua tren, duc tre, cua tre
_ dang » _ dan, 2 dang, _ danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ky dang) or (_ dang)) xay hoi. thien van chat tuc ((va danh) OR (va hanh)) thi dua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky dang) OR (_ dang)) xay hoi. thien van chat tuc ((va danh) OR (va hanh)) thi dua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ky dang) or (_ dang)) xay hoi. thien van chat tuc ((va danh) OR (va hanh)) thi dua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky dang) or (_ dang)) xay hoi. thien van chat tuc ((va danh) OR (va hanh)) thi dua tre*.