Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
kho tang » cao tang
thai cua » than cua, tai cuc, tri cua
tai kho » tai khoa, tai khoi, tai khu
tang xa » trang xa, tang ma, lang xa
va cham » va chat, va tham
duc van » duc tan, duc manh, duc phan
su tai » su thi, tu tai
va cam » va cac, va cao, va cai
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su tai kho tang xa hoi. hieu ((va cam) or (va cham)) ((duc van) or (duc va)) hanh thai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su tai kho tang xa hoi. hieu ((va cam) OR (va cham)) ((duc van) OR (duc va)) hanh thai cua tu.
• Adding a wildcard symbol may retrieve word variants: su tai kho tang xa hoi. hieu ((va cam) or (va cham)) ((duc van) or (duc va)) hanh thai cua tu*.