Perhaps you should try some spelling variations:
giau cua » gian cua, dieu cua, bieu cua
thu sach » thuat sach, thuoc sach, thu hoach
cac dac » cac dan, cac dai, cac bac
gia cua » gian cua, gia cuc, nghia cua
va hinh » va chinh, va kinh, va tinh
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
dac va » duc va, day va, dat va
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
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) or (thu sach)) y nang x hoi. hieu ve cac dac va hinh ((gia cua) OR (giau cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang x hoi. hieu ve cac dac va hinh ((gia cua) OR (giau cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) y nang x hoi. hieu ve cac dac va hinh ((gia cua) OR (giau cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang x hoi. hieu ve cac dac va hinh ((gia cua) OR (giau cua)) triet*.