Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, ban hanh
vai cua » dai cua, hai cua, lai cua
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, dia danh
ve cam » ve cham, ve cac, va cam
y nang » ky nang, v nang, may nang
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: tu sach ((y nang) OR (ly nang)) xa hoi. hieu ve cam xuc ((va hanh) or (va danh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) xa hoi. hieu ve cam xuc ((va hanh) OR (va danh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (ly nang)) xa hoi. hieu ve cam xuc ((va hanh) or (va danh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (ly nang)) xa hoi. hieu ve cam xuc ((va hanh) or (va danh)) vai cua te*.