Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
chat huu » pham huu
thanh va » hanh va, thanh ha, thanh ve
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
huu ban » huu bang, huu han, cuu ban

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 nang xa hoi. hieu va chat huu ban ((thanh va) OR (thanh van)) luu (tru* or truc*)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu va chat huu ban ((thanh va) OR (thanh van)) luu (tru* OR truc*).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu va chat huu ban ((thanh va) OR (thanh van)) luu (tru* or truc*)".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu va chat huu ban ((thanh va) OR (thanh van)) luu (tru* or truc*)*.