Perhaps you should try some spelling variations:
cau tren » dau tren, ca tren, cau treo
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cu tren » tu tren, dua tren
hieu va » lieu va, hieu qua
va cham » va chat, va tham
tang xa » trang xa, tang ma, lang xa
sang ky » sang kyo, dang ky, tang ky
san ky » van ky, dan ky, ban ky
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((san ky) OR (sang ky)) tang xa hoi. hieu va cham soc va thanh vi ((cau tren) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((san ky) OR (sang ky)) tang xa hoi. hieu va cham soc va thanh vi ((cau tren) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((san ky) OR (sang ky)) tang xa hoi. hieu va cham soc va thanh vi ((cau tren) or (cu tren))".
• Adding a wildcard symbol may retrieve word variants: te ((san ky) OR (sang ky)) tang xa hoi. hieu va cham soc va thanh vi ((cau tren) or (cu tren))*.