Perhaps you should try some spelling variations:
thuc giai » thuoc giao, hoc giai, thuc thai
tam thuc » tham thuc, am thuc, nam thuc
thang va » trang va, thong va, thanh va
su triet » su viet, su tien, ve triet
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
su sai » su tai, su hai, su dai
sai ky » sac ky
va tam » van tam, va tham, va tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((nang xa) OR (lang xa)) hoi. lieu va tam thuc giai ((thang va) or (hang va)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((nang xa) OR (lang xa)) hoi. lieu va tam thuc giai ((thang va) OR (hang va)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky ((nang xa) OR (lang xa)) hoi. lieu va tam thuc giai ((thang va) or (hang va)) su triet".
• Adding a wildcard symbol may retrieve word variants: su sai ky ((nang xa) OR (lang xa)) hoi. lieu va tam thuc giai ((thang va) or (hang va)) su triet*.