Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, nam duoc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y nang xa hoi. hieu ve ((((cam duc) OR (pham duc))) or (giao duc)) va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y nang xa hoi. hieu ve ((((cam duc) OR (pham duc))) OR (giao duc)) va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y nang xa hoi. hieu ve ((((cam duc) OR (pham duc))) or (giao duc)) va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang xa hoi. hieu ve ((((cam duc) OR (pham duc))) or (giao duc)) va hanh vi cua te*.