Perhaps you should try some spelling variations:
lang thai » lang chai, dang thai, lang hai
sach ty » sach tu, sach thu, xach tay
va lang » va nang, hoa lang
va tham » van tham, va thanh, va thuat
va cham » va chat
thai su » thai xu, tai su, thap su
thu va » thuc va, thue va, tu va
x hoi » xa hoi, o hoi, x ho
kien » bien, vien, tien

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) OR (sach y)) nang x hoi. hieu ((va cham) or (va tham)) thu va lang thai su kien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang x hoi. hieu ((va cham) OR (va tham)) thu va lang thai su kien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) nang x hoi. hieu ((va cham) or (va tham)) thu va lang thai su kien".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) nang x hoi. hieu ((va cham) or (va tham)) thu va lang thai su kien*.