Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » hieu qua
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu
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: te sach v nang x hoi. ((hieu va) OR (lieu va)) cam duc va danh di ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang x hoi. ((hieu va) OR (lieu va)) cam duc va danh di ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang x hoi. ((hieu va) OR (lieu va)) cam duc va danh di ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: te sach v nang x hoi. ((hieu va) OR (lieu va)) cam duc va danh di ((cua te) or (cua tu))*.