Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
hanh lai » hanh lam, hanh tai, thanh loi
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
luc va » tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. lieu va cac ((luc va) OR (duc va)) ((hanh lai) or (thanh lap)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. lieu va cac ((luc va) OR (duc va)) ((hanh lai) OR (thanh lap)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. lieu va cac ((luc va) OR (duc va)) ((hanh lai) or (thanh lap)) su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. lieu va cac ((luc va) OR (duc va)) ((hanh lai) or (thanh lap)) su triet*.