Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cuoc luc » coc luc, duoc lac, duoc luu
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
ty hang » ly hang, thi hang, thu hang
hieu va » lieu va, hieu qua
luc van » luoc van, luu van, duc van
tai cua » thai cua, tai cuc, tri 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: thuat sach ((ty hang) or (ty xang)) xa hoi. hieu va cuoc luc van hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ty hang) OR (ty xang)) xa hoi. hieu va cuoc luc van hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty hang) or (ty xang)) xa hoi. hieu va cuoc luc van hanh tai cua te*.