Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
mai hoi » mai khoi, dai hoi, lai hoi
xa danh » va danh, dia danh, nam danh
y nang » ly nang, v nang, may nang
cac tu » cac thu, cach tu, cac du
ca cuu » cap cuu, cua cuu, ca cau
ca cua » co cua
tu xa » tu xay, tu va, te xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((y nang) or (ky nang)) mai hoi. lieu va cac tu xa danh ((ca cuu) or (ca cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y nang) OR (ky nang)) mai hoi. lieu va cac tu xa danh ((ca cuu) OR (ca cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) or (ky nang)) mai hoi. lieu va cac tu xa danh ((ca cuu) or (ca cua)) tre*.