Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh thai » nhanh thai, hinh thai, hanh tai
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
hieu ca » hieu cac, hieu cua, hieu va
sach ty » sach y, sach tu, sach thu
thue va » thuc va, thuyet va, thuc vat
ty nang » ky nang, ty xang, ty hang
ca nam » cua nam, cai nam, ha nam
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty nang x hoi. hieu ca nam ((tu va) or (thue va)) hanh thai ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang x hoi. hieu ca nam ((tu va) OR (thue va)) hanh thai ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang x hoi. hieu ca nam ((tu va) or (thue va)) hanh thai ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty nang x hoi. hieu ca nam ((tu va) or (thue va)) hanh thai ((cua triet) OR (va triet))*.