Perhaps you should try some spelling variations:
thieu hanh » thien thanh, thien chanh, thieu khang
va trien » va truyen, va thiet, va tuyen
hanh lam » thanh lap, hanh kem, hanh va
thu sach » thuat sach, thuoc sach, thu hoach
thuc va » thuc vat, thuc dan, thuc day
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
lam va » nam va, dam va, lam ha
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) OR (thu sach)) thieu hanh xa hoi. hieu ve cac ((thuc va) or (tuc xa)) hanh lam va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) thieu hanh xa hoi. hieu ve cac ((thuc va) OR (tuc xa)) hanh lam va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) thieu hanh xa hoi. hieu ve cac ((thuc va) or (tuc xa)) hanh lam va trien".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) thieu hanh xa hoi. hieu ve cac ((thuc va) or (tuc xa)) hanh lam va trien*.