Perhaps you should try some spelling variations:
khong hinh » hong hinh, khong minh, khong hanh
cong hinh » cong vinh, cong tinh, hong hinh
ca khong » cat khong, cua khong, va khong
tu sach » thu sach, su sach, te sach
sach ha » sach nha, sach han, sach xa
me giai » de giai, ve giai, ke giai
giai ca » giai cac, giai cao, giai ma
ca cong » cua cong, cac cong, cao cong
cham va » chat va, pham va, chai va
ham va » pham va, nam va, dam va
ha me » cha me, ba me, ha 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 sach ha me giai ca cong hinh ) or ( tu sach ((ham va) or (cham va)) giai ca khong hinh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ha me giai ca cong hinh ) OR ( tu sach ((ham va) OR (cham va)) giai ca khong hinh )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach ha me giai ca cong hinh ) or ( tu sach ((ham va) or (cham va)) giai ca khong hinh ))*.