Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam loc » cam lo
va dung » van dung, va duong, vat dung
hai cua » thai cua, dai cua, lai cua
hoi cua » hoi chuc
y nang » ky nang, ly nang, v nang
loc va » hoc va, luc 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 van cam loc va dung ((hai cua) OR (hoi cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu van cam loc va dung ((hai cua) OR (hoi cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van cam loc va dung ((hai cua) OR (hoi cua)) te*.