Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hanh truong » hanh trong, anh truong, manh truong
thieu sach » chieu sach, thien hach, theo sach
hieu cach » hieu cac, chieu sach, hieu ca
truong va » truong dai, truong cao, truong dao
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (hieu cach)) - hanh truong va nhung huong dan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu cach)) - hanh truong va nhung huong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (hieu cach)) - hanh truong va nhung huong dan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu cach)) - hanh truong va nhung huong dan ((toan tap) OR (toan ban))*.