Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
danh tu » anh tu, doanh thu
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach thu, xach tay
va pham » van pham, va phat, va phap
hieu va » lieu va, hieu qua
cao hoi » cau hoi, co hoi, cao hoc
sach tu » sach thu, cach tu, sach uu
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ty) OR (sach tu)) nang cao hoi. hieu va pham thuc va danh tu ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach tu)) nang cao hoi. hieu va pham thuc va danh tu ((cua te) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ty) OR (sach tu)) nang cao hoi. hieu va pham thuc va danh tu ((cua te) or (cua tu))*".