Perhaps you should try some spelling variations:
cach phuong » cac phuong, bach phuong, cach phong
bach khang » bac thang, bach dang
thue thuc » thue thu, thu thuc, thuyet thuc
thuc bach » truc bach, thuoc sach, thuc hanh
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
thuc cach » thuoc sach, truoc cach, thuc hanh
phuong he » phuong te, phuong de, phuong ke
cac thue » cuc thue, cac thu, cac thuat
khang he » khong he, khang kho, hang ha
he trong » he trung, le trong, ke trong
ve cach » va cach, ve cac, ve canh
te cac » tu cac, ve cac, te cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te cac thue thuc bach khang he thong ) or ( ve cach thuc thuc cach phuong he trong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te cac thue thuc bach khang he thong ) OR ( ve cach thuc thuc cach phuong he trong )).
• Adding a wildcard symbol may retrieve word variants: (( te cac thue thuc bach khang he thong ) or ( ve cach thuc thuc cach phuong he trong ))*.