Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu van » hieu va, thien van, lieu va
xa thanh » va thanh, ha thanh, ta thanh
vinh cau » sinh cau, minh cau, tinh cau
vinh cuu » dinh cuu, sinh cua, dinh cu
tu sach » thu sach, su sach, te sach
van lam » van nam
lam tuc » lam thuoc, lam truoc, luat tuc
y nang » ky nang, ly nang, v nang

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) or (thuoc sach)) y nang x ho. hieu van lam tuc xa thanh ((vinh cau) OR (vinh cuu)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) y nang x ho. hieu van lam tuc xa thanh ((vinh cau) OR (vinh cuu)) treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuoc sach)) y nang x ho. hieu van lam tuc xa thanh ((vinh cau) OR (vinh cuu)) treo".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) y nang x ho. hieu van lam tuc xa thanh ((vinh cau) OR (vinh cuu)) treo*.