Perhaps you should try some spelling variations:
van tuan » van quan, van ban, anh tuan
hieu van » hieu va, thien van, lieu va
tuan soc » quan so, xuan son, dan soc
cuu tre » cau tren, cau treo
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cua tre » cua te, cua triet, dua tren
van hoc » van hoa
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
soc va » hoc va, loc va, doc va
te san » te ban, ke san, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ((ky lang) OR (ky dang)) van hoc. hieu van tuan soc va danh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ((ky lang) OR (ky dang)) van hoc. hieu van tuan soc va danh vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ((ky lang) OR (ky dang)) van hoc. hieu van tuan soc va danh vi ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te san ((ky lang) OR (ky dang)) van hoc. hieu van tuan soc va danh vi ((cuu tre) or (cua tre))*.