Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va dinh » van dinh, va kinh, vu dinh
va tinh » may tinh
y nang » ky nang, ly nang, v nang
du hoa » duc hoa, do hoa, du hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu ve chat duc ((va dinh) OR (va tinh)) du hoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ve chat duc ((va dinh) OR (va tinh)) du hoa viet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ve chat duc ((va dinh) OR (va tinh)) du hoa viet*.