Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
chat xuc » chat huu, cam xuc, chao xu
dong cua » dung cua, cong cua, huong cua
xuc va » duc va, tuc va, luc va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) thieu nang x hoi. ((lieu va) or (hieu qua)) chat xuc va van dong cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) thieu nang x hoi. ((lieu va) OR (hieu qua)) chat xuc va van dong cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) thieu nang x hoi. ((lieu va) or (hieu qua)) chat xuc va van dong cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) thieu nang x hoi. ((lieu va) or (hieu qua)) chat xuc va van dong cua te*.