Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu hanh » thuc hanh, thu thanh, thuy hanh
thuc van » thuc vat, thuc va, thuc hanh
thuc dan » thuc hanh, hoc dan, thuc vat
hanh dam » thanh dam, hanh lam, hanh nam
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
hieu ve » hieu va, hieu van
va hoi » xa hoi, va hoc, va hoa
ve cam » ve cham, ve cac, va cam
dam va » dam van, nam va, dam ha

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 thu hanh va hoi. hieu ve cam ((thuc van) or (thuc dan)) hanh dam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu hanh va hoi. hieu ve cam ((thuc van) OR (thuc dan)) hanh dam va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thu hanh va hoi. hieu ve cam ((thuc van) or (thuc dan)) hanh dam va triet*.