Perhaps you should try some spelling variations:
tay tinh » may tinh, tay binh, thuy tinh
pham duy » pham duc
ve pham » vi pham, v pham, ve phan
doi cua » hoi cua
duy tay » duy thay, duy tan, dung tay
sach tu » sach thu, cach tu, sach uu
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach tu) or (sach ty)) nang xa hoi. hieu ve pham duy tay tinh ((doi cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach ty)) nang xa hoi. hieu ve pham duy tay tinh ((doi cua) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) or (sach ty)) nang xa hoi. hieu ve pham duy tay tinh ((doi cua) or (dai cua)) triet*.