Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
mai khoi » mai khoa, tai khoa, cac khoi
thanh vi » hanh vi, thanh va, thanh ve
cam luoc » cam xuc, tom luoc, cam lo
luoc van » luoc can, luoc va, luc van
tu sach » thu sach, su sach, te sach
mai hoi » dai hoi, lai hoi, mai doi
cua duc » cua tuc, cua nuoc, cua quoc
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu

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 ((mai hoi) OR (mai khoi)). hieu ve cam luoc van thanh vi ((cua duc) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((mai hoi) OR (mai khoi)). hieu ve cam luoc van thanh vi ((cua duc) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((mai hoi) OR (mai khoi)). hieu ve cam luoc van thanh vi ((cua duc) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((mai hoi) OR (mai khoi)). hieu ve cam luoc van thanh vi ((cua duc) or (cua tu))*.