Perhaps you should try some spelling variations:
thanh ket » thanh ke, hanh kem, thanh dat
va trien » va truyen, va thiet, va tuyen
va thanh » gia thanh, ban thanh, va tinh
cam tuc » cam xuc, cam tu, nam thuc
sach ky » sac ky, sach ty, sach kem
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
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) OR (sach y)) lang xa hoi. hieu va ((cam tuc) or (nam thu)) va thanh ket va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) lang xa hoi. hieu va ((cam tuc) OR (nam thu)) va thanh ket va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach y)) lang xa hoi. hieu va ((cam tuc) or (nam thu)) va thanh ket va trien".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach y)) lang xa hoi. hieu va ((cam tuc) or (nam thu)) va thanh ket va trien*.