Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
vu khach » vu khanh, vu khac, vay khach
vu sach » vu bach
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
su sach » so sach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va

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) OR (vu khach))) or (su sach)) ly nang ma hoi. hieu ve cau luc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((vu sach) OR (vu khach))) OR (su sach)) ly nang ma hoi. hieu ve cau luc va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((vu sach) OR (vu khach))) or (su sach)) ly nang ma hoi. hieu ve cau luc va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((vu sach) OR (vu khach))) or (su sach)) ly nang ma hoi. hieu ve cau luc va hanh dai cua tre*.