Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc anh
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
hieu van » thien van, lieu va, hieu ve
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
hoc cac » hoc cao
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) OR (hoc cac)) tu nang x hoi. ((hieu van) or (hieu va)) cam duc va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc cac)) tu nang x hoi. ((hieu van) OR (hieu va)) cam duc va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc cac)) tu nang x hoi. ((hieu van) or (hieu va)) cam duc va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc cac)) tu nang x hoi. ((hieu van) or (hieu va)) cam duc va thanh vi cua te*.