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