Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
lang van » dang van, tang van, hoang van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
dan ky » van ky
soc va » loc va, doc va, goc va
te dan » te danh, tre dan, ke dan

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

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