Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
cua triet » cua viet, su triet, va triet
tai lang » tai cong, thi lan, tai san
lang hoa » hang hoa, lang ha, nang hoa
hanh lam » thanh lap, hanh kem, hanh va
tu sach » thu sach, su sach, tu cach
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
ve cach » va cach, ve cac, ve canh
hoa hoi » khoa hoi, hoa hoc, hoa doi
te sach » toc sach

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) OR (te sach)) tai lang hoa hoi. hieu ve cach thuc va hanh lam ((cua triet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) tai lang hoa hoi. hieu ve cach thuc va hanh lam ((cua triet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) tai lang hoa hoi. hieu ve cach thuc va hanh lam ((cua triet) or (cua vat))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) tai lang hoa hoi. hieu ve cach thuc va hanh lam ((cua triet) or (cua vat))*.