Perhaps you should try some spelling variations:
thue lang » thu hang, thu bang, phu lang
thai cua » than cua, tai cuc, tri cua
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
cac xuc » cac nuoc, chat xuc, cac cuoc
da thai » dao thai, do thai, ca thai
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
va da » va dao, va dau, va dap

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) OR (toc sach)) thue lang van hoi. hieu qua ((cac xuc) or (cam xuc)) va da thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) thue lang van hoi. hieu qua ((cac xuc) OR (cam xuc)) va da thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) thue lang van hoi. hieu qua ((cac xuc) or (cam xuc)) va da thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) thue lang van hoi. hieu qua ((cac xuc) or (cam xuc)) va da thai cua tre*.