Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nuoc may » nuoc my, nuoc mat, nuoc man
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
tinh va » tich va, trinh van, trinh vat
va cua » va chua, via cua, ca cua
hien » bien, tien, dien

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 ho. hieu ((vien dai) OR (hien dai)) nuoc may tinh va cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x ho. hieu ((vien dai) OR (hien dai)) nuoc may tinh va cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x ho. hieu ((vien dai) OR (hien dai)) nuoc may tinh va cua triet*.