Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
gian cua » gian xu
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va tinh » may tinh
via cua » gia cua, giau cua, rija cua
ban cua » ban quan
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va chat duc va tinh ((via cua) or (((gian cua) OR (ban cua)))) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu va chat duc va tinh ((via cua) OR (((gian cua) OR (ban cua)))) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu va chat duc va tinh ((via cua) or (((gian cua) OR (ban cua)))) te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu va chat duc va tinh ((via cua) or (((gian cua) OR (ban cua)))) te*.