Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
thu sach » tu sach, thuat sach, thuoc sach
truc ban » thuc ban, truc dan, truc van
lai cuu » lai cua, lai chau, lai cuoc
tuc ban » thuc ban, tu ban, tuc dan
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang xa hoi. ((hieu ve) or (hieu va)) cam ((tuc ban) OR (truc ban)) thanh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. ((hieu ve) OR (hieu va)) cam ((tuc ban) OR (truc ban)) thanh lai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. ((hieu ve) or (hieu va)) cam ((tuc ban) OR (truc ban)) thanh lai cuu tre*".