Perhaps you should try some spelling variations:
thi hanh » thi thanh
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
hieu cao » chieu cao, hieu cac, hieu ca
xuc van » duc van, luc van, vuc van
cho hoc » co hoc, khoa hoc
te sach » toc sach
tu nano » truc nano
tu nang » tru nang, tu nong, tu lang
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((((tu nang) OR (tu nano))) or (thi hanh)) cho hoc. hieu cao chat xuc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((tu nang) OR (tu nano))) OR (thi hanh)) cho hoc. hieu cao chat xuc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((((tu nang) OR (tu nano))) or (thi hanh)) cho hoc. hieu cao chat xuc van hanh vi cua cau*".