Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
hieu ve » hieu van
dai hoi » dai hoc, dai hai, dai moi
sach 2 » sach y
ma hoi » mai hoi, xa hoi, ma hoa
2 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: te sach 2 nang ((ma hoi) or (dai hoi)). ((hieu ve) or (hieu va)) cam duc va thanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach 2 nang ((ma hoi) OR (dai hoi)). ((hieu ve) OR (hieu va)) cam duc va thanh dai cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach 2 nang ((ma hoi) or (dai hoi)). ((hieu ve) or (hieu va)) cam duc va thanh dai cua tu*.