Perhaps you should try some spelling variations:
thi cong » tai cong, thien cong
hanh dat » thanh dat, anh dat, hanh cat
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
dat cua » dai cua, day cua, mat cua
duc ban » duc tan, duc van, dua ban
lam duc » lam duoc, pham duc, nam duoc
cua tre » cua te, cuu tre, cua triet
vu nang » vuc nang, va nang, vu dang
v nang » va nang, van nang, voi 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 ((v nang) OR (vu nang)) xa hoi. ((lieu va) or (thi cong)) lam duc ban hanh dat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((v nang) OR (vu nang)) xa hoi. ((lieu va) OR (thi cong)) lam duc ban hanh dat cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((v nang) OR (vu nang)) xa hoi. ((lieu va) or (thi cong)) lam duc ban hanh dat cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((v nang) OR (vu nang)) xa hoi. ((lieu va) or (thi cong)) lam duc ban hanh dat cua tre*.