Perhaps you should try some spelling variations:
thanh trien » thanh truyen, thanh vien, thanh nien
thanh tien » thanh vien, thanh nien, thang tien
thuat tong » thuat trong, thuat song, thuat cong
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
luong tap » cuong tap, luong tham, luong thai
luong tai » dung tai, luong va
doan cau » toan cau, doan dau, doan cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo phap tinh - ((thanh trien) OR (thanh tien)) thuat tong ((luong tap) OR (luong tai)) doan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo phap tinh - ((thanh trien) or (thanh tien)) thuat tong ((luong tap) OR (luong tai)) doan cau~".
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - ((thanh trien) or (thanh tien)) thuat tong ((luong tap) OR (luong tai)) doan cau*.