Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
khanh ve » hanh ve, thanh ve, khanh van
sach ky » sach y, sach ty, sach kem
khanh v » khanh van, thanh va, thanh ve
hieu va » lieu va, hieu qua
xuc xa » tuc xa, buc xa
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
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: tu ((sach ky) or (sac ky)) nang x hoi. hieu va cam xuc xa ((khanh ve) OR (khanh v)) cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang x hoi. hieu va cam xuc xa ((khanh ve) OR (khanh v)) cau theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang x hoi. hieu va cam xuc xa ((khanh ve) OR (khanh v)) cau theo".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang x hoi. hieu va cam xuc xa ((khanh ve) OR (khanh v)) cau theo*.