Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
thu lang » thu hang, phu lang, tho lang
thu bang » thu ban, thu hang, chu bang
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
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: su sach ((thu lang) or (thu bang)) xa hoi. hieu ve cham thuc va hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thu lang) OR (thu bang)) xa hoi. hieu ve cham thuc va hanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: su sach ((thu lang) or (thu bang)) xa hoi. hieu ve cham thuc va hanh vi ((cua te) or (cua tu))*.