Perhaps you should try some spelling variations:
thanh ca » thanh cha, thanh cac, thanh ha
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
sach ty » sach y, sach tu, sach thu
va cam » va cham, va cac, va cao
ca cua » co cua
ve cac » va cac, vien cac
ve cai » va cai, ve tai, ve cau
cua te » cua tu

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 ((((ve cai) OR (ve cac))) or (va cam)) duc va thanh ca cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x ho. hieu ((((ve cai) OR (ve cac))) OR (va cam)) duc va thanh ca cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x ho. hieu ((((ve cai) OR (ve cac))) or (va cam)) duc va thanh ca cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x ho. hieu ((((ve cai) OR (ve cac))) or (va cam)) duc va thanh ca cua te*.