Perhaps you should try some spelling variations:
tang thanh » dang thanh, trung thanh, hoang thanh
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh lap » thanh san, phan lap, thanh hai
duc tang » duc thang, duc tan, tuc tang
nang xa » nang x, nang ma, mang xa
lap cua » lai cua, tap cua, lam cua
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty ((nang xa) OR (lang xa)) hoi. hieu ((ve cao) or (ve bao)) duc tang thanh lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((nang xa) OR (lang xa)) hoi. hieu ((ve cao) OR (ve bao)) duc tang thanh lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ty ((nang xa) OR (lang xa)) hoi. hieu ((ve cao) or (ve bao)) duc tang thanh lap cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty ((nang xa) OR (lang xa)) hoi. hieu ((ve cao) or (ve bao)) duc tang thanh lap cua te*.