Perhaps you should try some spelling variations:
hieu van » hieu va, thien van
thi nang » thi cong, ki nang, thi hanh
dinh vai » dinh van, dinh vi, dinh va
chat xuc » chat huu, cam xuc, chao xu
sach thi » sach thu, sach tai, sach thieu
vai cuu » vai cua
va dinh » van dinh, va kinh, va tinh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc 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 thi nang xa hoi. ((hieu ve) or (((hieu van) or (lieu va)))) chat xuc va dinh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi nang xa hoi. ((hieu ve) OR (((hieu van) OR (lieu va)))) chat xuc va dinh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach thi nang xa hoi. ((hieu ve) or (((hieu van) or (lieu va)))) chat xuc va dinh vai cuu tre*.