Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
su sach » so sach, vu sach
xa danh » va danh, dia danh, nam danh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
tai hai » thi hai, dai hai, tai ha
tao hai » tao dai, tao tai, tao hoi
ky sang » ky nang, ky dang, ky tang
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky sang ((tao hai) OR (tai hai)). hieu ve cham tuc xa danh ((vi cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang ((tao hai) OR (tai hai)). hieu ve cham tuc xa danh ((vi cua) OR (di cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky sang ((tao hai) OR (tai hai)). hieu ve cham tuc xa danh ((vi cua) or (di cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach ky sang ((tao hai) OR (tai hai)). hieu ve cham tuc xa danh ((vi cua) or (di cua)) te*.