Perhaps you should try some spelling variations:
thu hang » thuc hanh, thu huong, thu trang
hanh lam » thanh lap, hanh kem, hanh va
thi hang » thi hanh, thi nang, thi hong
thuc dan » thuc hanh, hoc dan, thuc vat
tu sach » thu sach, su sach, te sach
lam cua » nam cua, lam chat
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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) OR (thi hang)) xa hoi. thi van cam ((xuc va) or (thuc dan)) hanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hang) OR (thi hang)) xa hoi. thi van cam ((xuc va) OR (thuc dan)) hanh lam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thu hang) OR (thi hang)) xa hoi. thi van cam ((xuc va) or (thuc dan)) hanh lam cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu hang) OR (thi hang)) xa hoi. thi van cam ((xuc va) or (thuc dan)) hanh lam cua tre*.