Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hoa » thanh pho
toc sach » hoc sach, doc sach, thuoc sach
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
cac xuc » cam xuc, chat xuc, cac cuoc
hoa cua » hoa chat, hoa xuat

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 ky nang xa hoi. ((lieu va) or (hieu va)) ((cac xuc) OR (cac nuoc)) gia thanh hoa cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. ((lieu va) OR (hieu va)) ((cac xuc) OR (cac nuoc)) gia thanh hoa cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. ((lieu va) or (hieu va)) ((cac xuc) OR (cac nuoc)) gia thanh hoa cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. ((lieu va) or (hieu va)) ((cac xuc) OR (cac nuoc)) gia thanh hoa cua triet*.