Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thanh ha » thanh hoa, thanh hai, nhanh ha
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
nang xa » nang x, lang xa, nang ma
sai ky » sac ky
va cau » van cau, va dau, va cao
ha ve » pha ve, hua ve, ca ve

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 (sai ky)) nang xa hoi. hieu ((va cau) OR (va cac)) truc va thanh ha ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sai ky)) nang xa hoi. hieu ((va cau) OR (va cac)) truc va thanh ha ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sai ky)) nang xa hoi. hieu ((va cau) OR (va cac)) truc va thanh ha ve triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sai ky)) nang xa hoi. hieu ((va cau) OR (va cac)) truc va thanh ha ve triet*.