Perhaps you should try some spelling variations:
thanh ket » thanh ke, hanh kem, thanh dat
dang xay » dang van
va thanh » gia thanh, ban thanh, va tinh
va trien » va truyen, va thiet, va tuyen
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cam tuc » cam xuc, nam thuc, dam thuc
cam tu » cam thu, nam tu, dam tu
ket va » ket van

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 ((dang xay) OR (van xay)) hoi. lieu va ((cam tuc) or (cam tu)) va thanh ket va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dang xay) OR (van xay)) hoi. lieu va ((cam tuc) OR (cam tu)) va thanh ket va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dang xay) OR (van xay)) hoi. lieu va ((cam tuc) or (cam tu)) va thanh ket va trien".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((dang xay) OR (van xay)) hoi. lieu va ((cam tuc) or (cam tu)) va thanh ket va trien*.