Perhaps you should try some spelling variations:
cong hai » cong thai, cong ha, hoang hai
cham cuu » cap cuu, chat cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cuu ban » cuu van, cua ban, cuu san
ban anh » ban hanh, ban banh, ban danh
do cua » doi cua, co cua, de cua
d cua » de cua, da cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ((son hai) or (cong hai)). hieu va cham cuu ban anh ((d cua) OR (do cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((son hai) OR (cong hai)). hieu va cham cuu ban anh ((d cua) OR (do cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((son hai) or (cong hai)). hieu va cham cuu ban anh ((d cua) OR (do cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((son hai) or (cong hai)). hieu va cham cuu ban anh ((d cua) OR (do cua)) triet*.