Perhaps you should try some spelling variations:
thanh ket » hanh kem, thanh dat, tinh ket
va trien » va truyen, va thiet, va tuyen
thanh ke » thanh ve, thanh de, thanh ky
sach ky » sac ky, sach y, sach ty
te sach » toc sach
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang

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