Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va tinh » may tinh
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
dao tuc » dao duc
ca cua » co cua
va cua » va chua, via cua, ma cua
ve dao » de dao, va dao, ve bao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve dao tuc va tinh ((va cua) or (ca cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve dao tuc va tinh ((va cua) OR (ca cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve dao tuc va tinh ((va cua) or (ca cua)) te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve dao tuc va tinh ((va cua) or (ca cua)) te*.