Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu van
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va ((hanh di) or (hanh de)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va ((hanh di) OR (hanh de)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ly nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va ((hanh di) or (hanh de)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ly nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va ((hanh di) or (hanh de)) cua tre*.