Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
xang cau » xang dau, hang cau, bang cau
via cua » gia cua, gian cua, giau cua
sach tu » sach thu, cach tu, sach uu
hieu ve » hieu va, hieu van
sach ty » sach y, sach thu, xach tay
va hanh » van hanh, va danh, ban hanh
ve tao » ve bao, de tao, ve tac
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ty) or (sach tu)) xang cau hoi. hieu ve tao duoc ((va hanh) OR (va thanh)) via cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach tu)) xang cau hoi. hieu ve tao duoc ((va hanh) OR (va thanh)) via cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) or (sach tu)) xang cau hoi. hieu ve tao duoc ((va hanh) OR (va thanh)) via cua tu".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sach tu)) xang cau hoi. hieu ve tao duoc ((va hanh) OR (va thanh)) via cua tu*.