Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
cua triet » cua viet, su triet, va triet
tru nang » tra nang, tri nang, truc nano
sach tru » sach truc, sach thu, sach tu
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tac, cac nuoc
cua tre » cua te, cuu tre, dua tren
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: nuoc sach tru nang xa hoi. hieu va ((cac tuc) OR (cac tu)) van hanh tai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach tru nang xa hoi. hieu va ((cac tuc) OR (cac tu)) van hanh tai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach tru nang xa hoi. hieu va ((cac tuc) OR (cac tu)) van hanh tai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: nuoc sach tru nang xa hoi. hieu va ((cac tuc) OR (cac tu)) van hanh tai ((cua tre) or (cua triet))*.