Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang doc » nang luc
nang doi » nang noi, hang doi, nang dong
luc tam » luc tai, luc lam, luat tam
cua tuc » cua duc, cua tu, cua thuoc
luc cam » luc lam, xuc cam, luc cao
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
ve cau » ke cau, va cau, ve cac
v nang » va nang, vu nang, van nang

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 v nang xa hoi. hieu ve cau ((luc cam) OR (luc tam)) ((nang doi) or (nang doc)) cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach v nang xa hoi. hieu ve cau ((luc cam) OR (luc tam)) ((nang doi) OR (nang doc)) cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach v nang xa hoi. hieu ve cau ((luc cam) OR (luc tam)) ((nang doi) or (nang doc)) cua tuc".
• Adding a wildcard symbol may retrieve word variants: thu sach v nang xa hoi. hieu ve cau ((luc cam) OR (luc tam)) ((nang doi) or (nang doc)) cua tuc*.