Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu van
hieu va » lieu va
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach tru nang x hoi. ((hieu ve) or (((hieu va) or (hieu qua)))) cam duc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach tru nang x hoi. ((hieu ve) OR (((hieu va) OR (hieu qua)))) cam duc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach tru nang x hoi. ((hieu ve) or (((hieu va) or (hieu qua)))) cam duc van hanh vi cua te*.