Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
sat huong » suat huong, san huong, sat muong
thuc sat » thuc vat, thuc san, thuc hoat
sach ky » sac ky, sach y, sach ty
doi cua » dai cua, hoi cua
doi cuu » doi cuoc
su sach » so sach, vu sach
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang ((x hoi) or (o hoi)). hieu ve pham thuc sat huong ((doi cuu) OR (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((x hoi) OR (o hoi)). hieu ve pham thuc sat huong ((doi cuu) OR (doi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((x hoi) or (o hoi)). hieu ve pham thuc sat huong ((doi cuu) OR (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((x hoi) or (o hoi)). hieu ve pham thuc sat huong ((doi cuu) OR (doi cua)) tre*.