Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cac lo » cac lop, cac co, cac bo

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang xa hoi. hieu va cac lo ((va hanh) OR (va danh)) vi ((cua triet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang xa hoi. hieu va cac lo ((va hanh) OR (va danh)) vi ((cua triet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang xa hoi. hieu va cac lo ((va hanh) OR (va danh)) vi ((cua triet) or (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang xa hoi. hieu va cac lo ((va hanh) OR (va danh)) vi ((cua triet) or (hoa viet))*.