Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
pham hoai » pham hoa, pham hoang, pham khoa
thu sach » tu sach, thuoc sach, thu hoach
cham hoi » cham voi, cham h'roi, chai thoi
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ly lang » ly hang, ly vang, le lang
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuat sach)) ly lang xa hoi. hieu va ((cham hoi) OR (pham hoai)) va hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ly lang xa hoi. hieu va ((cham hoi) OR (pham hoai)) va hanh di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) ly lang xa hoi. hieu va ((cham hoi) OR (pham hoai)) va hanh di cua tu".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) ly lang xa hoi. hieu va ((cham hoi) OR (pham hoai)) va hanh di cua tu*.