Perhaps you should try some spelling variations:
thuong doi » huong doi, tuong doi, thuong dong
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
cac tu » cac thu, cach tu, cac du

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 (doc sach)) ky nang xa hoi. hieu va cac tu va thuong doi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ky nang xa hoi. hieu va cac tu va thuong doi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) ky nang xa hoi. hieu va cac tu va thuong doi cuu tre*.