Perhaps you should try some spelling variations:
cong cham » cong chat, cong pham, song cham
thi cong » tai cong, thien cong
cham duc » pham duc, cham soc, pham duy
dinh ba » dinh gia, dinh van, dinh lam
vinh ba » vinh ha, tinh bac, hinh bai
va kinh » va tinh, qua kinh
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
sac ky » cac ky, sai ky
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 ((nang xa) OR (nang ma)) hoi. thi cong cham duc va kinh ((vinh ba) or (dinh ba)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang ma)) hoi. thi cong cham duc va kinh ((vinh ba) OR (dinh ba)) tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang xa) OR (nang ma)) hoi. thi cong cham duc va kinh ((vinh ba) or (dinh ba)) tren*".