Perhaps you should try some spelling variations:
bieu thien » bieu hien, dieu khien, bien phien
thien cac » hien cac, thien cau, thieu cac
thu sach » tu sach, thuat sach, thuoc sach
danh vai » danh sai, danh va, doanh van
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
bo va » bao va, so va, co va
do va » do van, so va

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 ky nang xa hoi. bieu thien cac ((bo va) or (do va)) danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. bieu thien cac ((bo va) OR (do va)) danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. bieu thien cac ((bo va) or (do va)) danh vai cua tre*.