Perhaps you should try some spelling variations:
bach khang » bac thang, bach dang
cach thuc » anh thuc, cac thu
thuc thuc » thuc thai
thuc bach » truc bach, thuc cach, thuoc sach
thuc chat » thuc chan, thuc pham, thuc vat
chat tung » chat luong, chat quang, chat trong
khang he » khong he, khang kho, hang ha
he trong » he thong, he trung, le trong
hoc thuc » hoc huu
ho trong » hoc trong, hoa trong, hoi trong
te cach » ve cach, te sach, tu cach
ben hoc » benh hoc, den hoc, dien hoc
tung ho » tuong ho, trung hoc, trung hoa
te ben » te ban, tu ben

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te cach thuc thuc bach khang he trong ) or ( te ben hoc thuc chat tung ho trong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te cach thuc thuc bach khang he trong ) OR ( te ben hoc thuc chat tung ho trong ))*.