Perhaps you should try some spelling variations:
thieu hanh » thien thanh, thien chanh, thieu khang
va tuyen » va truyen, tac tuyen, ke tuyen
va trien » va truyen, va thiet, va tieng
hanh lam » thanh lap, hanh kem, hanh va
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
ve cac » va cac, vien cac

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 thieu hanh xa hoi. hieu ve cac ((thuc va) or (tuc xa)) hanh lam ((va trien) OR (va tuyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thieu hanh xa hoi. hieu ve cac ((thuc va) OR (tuc xa)) hanh lam ((va trien) OR (va tuyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thieu hanh xa hoi. hieu ve cac ((thuc va) or (tuc xa)) hanh lam ((va trien) OR (va tuyen))".
• Adding a wildcard symbol may retrieve word variants: tu sach thieu hanh xa hoi. hieu ve cac ((thuc va) or (tuc xa)) hanh lam ((va trien) OR (va tuyen))*.