Perhaps you should try some spelling variations:
truc thuoc » tri thuoc, tu thuoc
thuat sach » thuat lanh
thuat san » thuat toan, thuat lanh, thuat xay
thuc thuc » hoc thuc
phan tong » phan trong, phan cong, han tong
bach ha » bac ha, bich ha, sach ha
ha phan » hoa phan, hai phan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) or (((thuat san) or (thuat song)))) ((truc thuoc) OR (thuc thuc)) bach ha phan tong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (((thuat san) OR (thuat song)))) ((truc thuoc) OR (thuc thuc)) bach ha phan tong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (((thuat san) or (thuat song)))) ((truc thuoc) OR (thuc thuc)) bach ha phan tong".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (((thuat san) or (thuat song)))) ((truc thuoc) OR (thuc thuc)) bach ha phan tong*.