Perhaps you should try some spelling variations:
kho tang » cao tang
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
sai kho » dai kho, tai khoa, dai khoa
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
duc van » duc tan, duc manh, duc phan
su sai » su tai, su hai, su dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai kho tang xa hoi. hieu va cac ((duc van) or (duc va)) hanh ((thai cua) OR (than cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai kho tang xa hoi. hieu va cac ((duc van) OR (duc va)) hanh ((thai cua) OR (than cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai kho tang xa hoi. hieu va cac ((duc van) or (duc va)) hanh ((thai cua) OR (than cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sai kho tang xa hoi. hieu va cac ((duc van) or (duc va)) hanh ((thai cua) OR (than cua)) te*.