Perhaps you should try some spelling variations:
khang thuoc » khong thuoc, dang thuoc, hanh thuoc
nong thuoc » dong thuoc, long thuoc, khong thuoc
goc nganh » hoc nganh, hoc nhanh, cac nganh
hieu mot » thieu mot, hieu moi, hieu so
phan van » pham van, thanh van, luan van
anh hoc » sinh hoc, benh hoc, hinh hoc
hoc bai » hoc dai, hoc giai
va phan » van phan, va phat, va phap
tu anh » tu hanh, tu manh, thu anh
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu anh hoc bai, nghe hieu mot goc nganh ((nong thuoc) or (khang thuoc)) ma hoi va phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu anh hoc bai, nghe hieu mot goc nganh ((nong thuoc) OR (khang thuoc)) ma hoi va phan van.
• Adding a wildcard symbol may retrieve word variants: tu anh hoc bai, nghe hieu mot goc nganh ((nong thuoc) or (khang thuoc)) ma hoi va phan van*.