Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
tu sach » thu sach, su sach, te sach
vu sach » vu bach, su sach, vu khach
ky mang » ky nang, ke mang, ky dang
may hoi » may thoi, tay hoi, mai hoi
hieu va » lieu va, hieu qua
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
va cam » va cham, va cac, va cao
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) or (vu sach)) ky mang may hoi. hieu va cam ((xuc van) or (duc van)) thanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ky mang may hoi. hieu va cam ((xuc van) OR (duc van)) thanh dai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ky mang may hoi. hieu va cam ((xuc van) or (duc van)) thanh dai cua tu*.