Perhaps you should try some spelling variations:
hoan thanh » hoang thanh, ban thanh, van thanh
hoc thanh » hoc nhanh, hoc phan, ha thanh
thai vung » thai cong, thai van
vung tuan » vuong tuan, hung tuan, vong tuan
thu hinh » thi hinh, thu minh, thu kinh
hinh hoc » sinh hoc, tin hoc, benh hoc
tuan san » luan san, tan san, thanh san
cuu mon » cuu mo, cuu mot, cuu cong
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu hinh hoc tap, nghien cuu mon ((hoc thanh) or (hoan thanh)) hoa hoc xa thai vung tuan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu hinh hoc tap, nghien cuu mon ((hoc thanh) OR (hoan thanh)) hoa hoc xa thai vung tuan san.
• Adding a wildcard symbol may retrieve word variants: thu hinh hoc tap, nghien cuu mon ((hoc thanh) or (hoan thanh)) hoa hoc xa thai vung tuan san*.