Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
hanh sai » hanh san, hanh tai, danh sai
te sach » toc sach
va hanh » van hanh, va thanh, va danh
van lam » van nam
sach ky » sac ky, sach y, sach ty
van cam » van nam, van cau, van dam
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu ((van cam) OR (van lam)) tuc va hanh sai ((va trien) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu ((van cam) OR (van lam)) tuc va hanh sai ((va trien) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu ((van cam) OR (van lam)) tuc va hanh sai ((va trien) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu ((van cam) OR (van lam)) tuc va hanh sai ((va trien) or (cua te))*.