Perhaps you should try some spelling variations:
thu hang » thi hang, thuc hanh, thu huong
thanh le » thinh le, thanh ve, thanh de
thuc dan » thuc hanh, hoc dan, thuc vat
sach thu » sach thue, sach thieu, sach tham
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
tuc ban » thuc ban, truc ban, tu ban
ve cam » ve cham, ve cac, va cam
ha hoi » hoa hoi, ha noi, va hoi
le cua » ly cua

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 hang ((ha hoi) or (xa hoi)). hieu ve cam ((tuc ban) or (thuc dan)) thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu hang ((ha hoi) OR (xa hoi)). hieu ve cam ((tuc ban) OR (thuc dan)) thanh le cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach thu hang ((ha hoi) or (xa hoi)). hieu ve cam ((tuc ban) or (thuc dan)) thanh le cua vat*.