Perhaps you should try some spelling variations:
thien van » thi van
sach ty » sach y, sach tu, sach thu
vat cau » va cau, van cau, vat hau
cau luc » cau truc, cau phuc
tu sach » thu sach, su sach, te sach
cam luc » cam xuc
ty nang » ky nang, ty xang, ty hang
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 ty nang x hoi. thien van ((cam luc) OR (cau luc)) phan tu ((vat cau) or (dat cau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. thien van ((cam luc) OR (cau luc)) phan tu ((vat cau) OR (dat cau)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. thien van ((cam luc) OR (cau luc)) phan tu ((vat cau) or (dat cau)) tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. thien van ((cam luc) OR (cau luc)) phan tu ((vat cau) or (dat cau)) tren*.