Perhaps you should try some spelling variations:
te sach » toc sach
qua cam » qua cham, qua cac, qua ca
doi cua » dai cua, hoi cua
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
loc va » hoc va, luc va
di cua » dai cua, de cua, do cua
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 qua cam ((loc va) or (tuc xa)) thanh ((di cua) OR (doi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang x hoi. hieu qua cam ((loc va) OR (tuc xa)) thanh ((di cua) OR (doi cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang x hoi. hieu qua cam ((loc va) or (tuc xa)) thanh ((di cua) OR (doi cua)) te".
• Adding a wildcard symbol may retrieve word variants: te sach v nang x hoi. hieu qua cam ((loc va) or (tuc xa)) thanh ((di cua) OR (doi cua)) te*.