Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
xa anh » ha anh, va anh, xuan anh
ca anh » cao anh, ha anh, co anh
ve cua » le cua, de cua, te cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (lang xa)) hoi. hieu va pham thuc ((xa anh) OR (ca anh)) ve cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (lang xa)) hoi. hieu va pham thuc ((xa anh) OR (ca anh)) ve cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (lang xa)) hoi. hieu va pham thuc ((xa anh) OR (ca anh)) ve cua te*.