Perhaps you should try some spelling variations:
tang hanh » tang thanh, dang hanh, nang hanh
va trien » va truyen, va thiet, va tuyen
duc tang » duc thang, duc tan, tuc tang
ve triet » su triet
hanh dai » hanh tai, hanh dao, vanh dai
cham duc » pham duc, cham soc, pham duy
sach thu » sach thue, sach thieu, sach tham
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
nang xa » nang x, lang xa, nang ma

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 y) or (sach thu)) nang xa hoi. hieu ve cham duc tang hanh dai ((ve triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach thu)) nang xa hoi. hieu ve cham duc tang hanh dai ((ve triet) OR (va trien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach y) or (sach thu)) nang xa hoi. hieu ve cham duc tang hanh dai ((ve triet) OR (va trien))*".