Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
cac tuc » cac toc, cac tu, cac tac
va danh » va dinh, va dan, va hanh
y nang » ly nang, v nang, may nang
tuc va » thuc va, truc va, tuc xa
ca cuu » cap cuu, cua cuu, ca cau
ca cua » co cua

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) or (ky nang)) mai hoi. lieu va cac tuc va danh ((ca cuu) or (ca cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) mai hoi. lieu va cac tuc va danh ((ca cuu) OR (ca cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ky nang)) mai hoi. lieu va cac tuc va danh ((ca cuu) or (ca cua)) tre*.