Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
cham cuu » cap cuu, chat cua
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang
ma hoi » xa hoi, ma hoa, me hoi
cuu va » cuu van, cuu ve
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 ((ly nang) or (vu quang)) ((ma hoi) OR (mai hoi)). hieu ve cham cuu va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly nang) OR (vu quang)) ((ma hoi) OR (mai hoi)). hieu ve cham cuu va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ly nang) or (vu quang)) ((ma hoi) OR (mai hoi)). hieu ve cham cuu va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ly nang) or (vu quang)) ((ma hoi) OR (mai hoi)). hieu ve cham cuu va danh vai cua te*.