Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
van cam » van nam, van lam, van cau
ly nang » ky nang, ly hang, ly vang
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
x hoi » xa hoi, o hoi, x ho
vi cu » vi su, vi xu
vi du » vi dum, ve du, li du
va du » va dau, va su, va tu

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 ly nang x hoi. hieu van cam xuc va dan ((vi cu) or (((vi du) OR (va du)))) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang x hoi. hieu van cam xuc va dan ((vi cu) OR (((vi du) OR (va du)))) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang x hoi. hieu van cam xuc va dan ((vi cu) or (((vi du) OR (va du)))) tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang x hoi. hieu van cam xuc va dan ((vi cu) or (((vi du) OR (va du)))) tren*.