Perhaps you should try some spelling variations:
sach tham » sach nha
sach phap » sach phat, sach nha, cach pha
goc khien » ngoc chien, hoc hien
phap ngu » nhat ngu, han ngu, phap tu
tham ngu » pham ngu, thanh ngu, thuat ngu
khien so » khien mo, khien hoc, khien cho
te sach » toc sach
nhin su » nhan su, nhin tu, nhin so
so viet » hoc viet

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 phap ngu - goc nhin su viet ) or ( te sach tham ngu - goc khien so viet ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach phap ngu - goc nhin su viet ) OR ( te sach tham ngu - goc khien so viet )).
• Adding a wildcard symbol may retrieve word variants: (( te sach phap ngu - goc nhin su viet ) or ( te sach tham ngu - goc khien so viet ))*.