Perhaps you should try some spelling variations:
kho tang » cao tang
cham duc » pham duc, cham soc, pham duy
dan thai » dang thai, dan thi, dan than
sac kho » suc khoe, cac khoi, dac khoa
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va cham » va chat, va tham
te sac » te sach, te cac, te san
va dan » ca dan, va dao, va dau
cua tu » cua tuc, cua cu, cua vu
cua su » qua su

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

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