Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
chat duc » chat xuc, chat doc, chet duoc
tu sach » su sach, te sach, tu cach
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, va tinh
dinh du » dinh duc, dinh cu, dinh tu
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) OR (thu sach)) y nang xa hoi. hieu ve chat duc va dinh du hoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang xa hoi. hieu ve chat duc va dinh du hoa viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y nang xa hoi. hieu ve chat duc va dinh du hoa viet*.