Perhaps you should try some spelling variations:
lang chai » lang ha, lang cua, lang phi
lang thai » dang thai, lang hai, hoang thai
ve triet » va trien, su 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
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay
thu va » thuc va, thue va, tu va
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va nam thu va ((lang thai) or (lang chai)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu va nam thu va ((lang thai) OR (lang chai)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu va nam thu va ((lang thai) or (lang chai)) ve triet*.