Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
va hanh » van hanh, va thanh, va danh
nang ma » tang ma, sang ma, nang cao
hanh de » hanh ve, hanh kem
hieu va » hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
sach v » sach va, sach 2, sach vay
xuc va » duc va, tuc va, luc va
de va » de van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach v) or (sach y)) nang ma hoi. ((hieu va) or (lieu va)) cam xuc va hanh de va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach v) OR (sach y)) nang ma hoi. ((hieu va) OR (lieu va)) cam xuc va hanh de va trien.
• Adding a wildcard symbol may retrieve word variants: toc ((sach v) or (sach y)) nang ma hoi. ((hieu va) or (lieu va)) cam xuc va hanh de va trien*.