Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hoang di » hoang dai, hoang de, hoang da
xuc van » duc van, luc van, vuc van
hang di » hang doi, hang vi, hang dien
te sach » toc sach
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao

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