Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tru nang » tra nang, tri nang, truc nano
sach tru » sach truc, sach thu, sach tu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hanh va » hang va, hanh vi
danh va » doanh va, anh va, dan va
cua su » qua su
do duc » dao duc, do duy
co duc » co duoc, cao duc, ho duc

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 tru nang xa hoi. hieu va ((co duc) or (do duc)) va ((danh va) or (hanh va)) cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tru nang xa hoi. hieu va ((co duc) OR (do duc)) va ((danh va) OR (hanh va)) cua su.
• Adding a wildcard symbol may retrieve word variants: thu sach tru nang xa hoi. hieu va ((co duc) or (do duc)) va ((danh va) or (hanh va)) cua su*.