Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien sach » dien sach, kien sach, thien hach
sach duoc » sach nuoc, sach dao, sach dung
va trinh » van trinh, va tinh, lap trinh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
duoc va » nuoc va, duc va, duoc ma
van huu » van huy, van hau, van hue
san huu » tran huu, phan huu, san khau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. bieu hien sach duoc va trinh ((van huu) OR (san huu)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. bieu hien sach duoc va trinh ((van huu) OR (san huu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. bieu hien sach duoc va trinh ((van huu) OR (san huu)) tre*.