Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
can thuc » dan thuc, cay thuc, san thuc
van thuc » va thuc, dan thuc, van thu
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, dua tren
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: su sach ty nang x hoi. lieu va ((can thuc) OR (van thuc)) va thanh hai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. lieu va ((can thuc) OR (van thuc)) va thanh hai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang x hoi. lieu va ((can thuc) OR (van thuc)) va thanh hai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. lieu va ((can thuc) OR (van thuc)) va thanh hai ((cua tre) or (cua triet))*.