Perhaps you should try some spelling variations:
su triet » su tien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
su viet » so viet
y nang » ky nang, ly nang, v nang
ve nam » he nam, va nam, te nam
le nam » ly nam, he nam, le na
va dan » ca dan, va dao, va dau
dan va » doan va, dan ca, ban va

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 y nang xa hoi. hieu ((ve nam) or (le nam)) tu va dan va ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve nam) OR (le nam)) tu va dan va ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((ve nam) or (le nam)) tu va dan va ((su triet) OR (su viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve nam) or (le nam)) tu va dan va ((su triet) OR (su viet))*.