Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
tu sach » thu sach, su sach, te 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 » ca anh, va anh, xuan anh
ha anh » ha thanh, pham anh
le cua » ly cua
cua te » cua tu

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