Perhaps you should try some spelling variations:
thong minh » thong tin, hoang minh
doan thong » toan thong, doanh thuong, doan phuong
tung hinh » tinh hinh
giai cac » gian cac, giai ca, giai cao
cac tung » cac tuong, cac trung, cac ung
me giai » de giai, ve giai, ke giai
tu sach » thu sach, su sach, te sach
sach ha » sach nha, sach han, sach xa
le giai » de giai, ly giai, ve giai
tu bach » vu bach, tu cach, tu hach
han me » phan mem
tu bac » tu ban, tu cac, tu bat
ha le » va le

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((tu bach) or (tu bac)) han me giai cac tung hinh ) or ( tu sach ha le giai doan thong minh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((tu bach) OR (tu bac)) han me giai cac tung hinh ) OR ( tu sach ha le giai doan thong minh )).
• Adding a wildcard symbol may retrieve word variants: (( ((tu bach) or (tu bac)) han me giai cac tung hinh ) or ( tu sach ha le giai doan thong minh ))*.