Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
van tham » van thanh, van tuan, van chat
hieu van » hieu va, thien van, lieu va
cau tren » dau tren, ca tren, cau treo
hanh vai » hanh vi, hanh va, hanh tai
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
cu tren » tu tren, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach tu)) nang x ho. hieu van tham nuoc va hanh vai ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang x ho. hieu van tham nuoc va hanh vai ((cau tren) OR (cu tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach tu)) nang x ho. hieu van tham nuoc va hanh vai ((cau tren) OR (cu tren))*".