Perhaps you should try some spelling variations:
gat thanh » dat thanh, tat thanh, gian thanh
vat thanh » dat thanh, tat thanh, viet thanh
cua triet » cua viet, su triet, va triet
cac thuc » cach thuc, cac thu, can thuc
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky nang xa hoi. lieu va cac thuc ((vat thanh) OR (gat thanh)) vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky nang xa hoi. lieu va cac thuc ((vat thanh) OR (gat thanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: co sach ky nang xa hoi. lieu va cac thuc ((vat thanh) OR (gat thanh)) vi cua triet*.