Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
manh von » manh hon, manh toan, manh long
cua tre » cua te, cuu tre, cua triet
cam suc » cam xuc, cao suc, cham soc
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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 (sach ty)) nang xa hoi. hieu ve cam suc manh von tai ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve cam suc manh von tai ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve cam suc manh von tai ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve cam suc manh von tai ((cua tre) or (su triet))*.