Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dang mai » dang hai, dang mau, dang bai
cham cuu » cap cuu, chat cua
keo cua » keo sua, kho cua, khoe cua
kem cua » em cua, diem cua
va danh » va dinh, va dan, va hanh
hieu ve » hieu va
mai hoi » mai khoi, dai hoi, lai hoi
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
cuu va » cuu van, cuu ve
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky dang mai hoi. ((hieu ve) or (hieu van)) cham cuu va danh ((kem cua) OR (keo cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang mai hoi. ((hieu ve) OR (hieu van)) cham cuu va danh ((kem cua) OR (keo cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang mai hoi. ((hieu ve) or (hieu van)) cham cuu va danh ((kem cua) OR (keo cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky dang mai hoi. ((hieu ve) or (hieu van)) cham cuu va danh ((kem cua) OR (keo cua)) tre*.